Multiphor ll Electrophoresis System
GE Healthcare
Life Sciences
Multiphor ll
Electrophoresis System
User Manual
Important user information
All users must read this entire manual to fully understand the
safe use of Multiphor ll Electrophoresis System.
WARNING!
WARNING indicates a hazardous situation which, if
not avoided, could result in death or serious injury. It
is important not to proceed until all stated conditions
are met and clearly understood.
Indicates that hazardous voltages occur inside the
instrument.
CAUTION!
CAUTION indicates a hazardous situation which, if not
avoided, could result in minor or moderate injury. It
is important not to proceed until all stated conditions
are met and clearly understood.
NOTICE!
NOTICE indicates instructions that must be followed to
avoid damage to the product or other equipment.
Note
The Note sign is used to indicate information important for
trouble-free and optimal use of the product.
CE Certifying
This product meets the requirements of applicable CE-directives.
A copy of the corresponding Declaration of Conformity is
available on request.
The CE symbol and corresponding declaration of conformity, is
valid for the instrument when it is:
– used as a stand-alone unit, or
– connected to other CE-marked GE Healthcare instruments, or
– connected to other products recommended or described in
this manual, and
– used in the same state as it was delivered from GE Healthcare
except for alterations described in this manual.
Recycling
This symbol indicates that the waste of electrical
and electronic equipment must not be disposed
as unsorted municipal waste and must be
collected separately. Please contact an authorized
representative of the manufacturer for information
concerning the decommissioning of equipment.
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Contents
Contents
1 Introduction
2 Safety information
3 Description of parts
4 Installation
5 Operation
5.1
5.2
5.3
5.4
5.5
5.6
5.7
Electrophoresis using ExcelGel SDS and buffer strips................................20
Electrophoresis using buffer chambers.............................................................25
Isoelectric focusing using CleanGel IEF.............................................................28
2-D electrophoresis using Immobiline DryStrip and ExcelGel SDS.......31
Electrophoretic transfer Introduction.................................................................32
Stock solutions...............................................................................................................38
Running conditions for precast gels....................................................................40
6 Maintenance
6.1 Recycling...........................................................................................................................45
7 Technical specifications
8 Trouble shooting
9 Multiphor II application kits and accessories
9.1
9.2
9.3
9.4
9.5
9.6
9.7
SDS and Native PAGE, IEF Kit..................................................................................53
Buffer Strip Positioner.................................................................................................57
Immobiline DryStrip Reswelling Try.....................................................................58
NovaBlot Kit.....................................................................................................................59
FilmRemover...................................................................................................................60
Roller...................................................................................................................................61
Sample application accessories............................................................................61
10 Ordering information
10.1 Multiphor II.......................................................................................................................65
10.2 MultiTemp IV...................................................................................................................67
10.3 EPS Power Supplies.....................................................................................................67
10.4 Precast gels and buffer strips.................................................................................68
10.5 Molecular weight and pI markers.........................................................................69
10.6 Carrier ampholytes......................................................................................................70
10.7 PlusOne electrophoresis chemicals.....................................................................70
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Contents
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Introduction 1
1 Introduction
Multiphor™ II electrophoresis system is a versatile modular system for horizontal
electrophoresis, isoelectric focusing, 2-D electrophoresis and electrophoretic transfer.
For ease of use and reproducible results, an innovative range of precast gels for all major
electrophoretic techniques is available with Multiphor II:
Technique
Precast Gel
SDS and Native PAGE
ExcelGel™ SDS Gradient
ExcelGel SDS Homogeneous
IEF
CleanGel™ IEF
2-D electrophoresis
Immobiline™ DryStrip
ExcelGel SDS gradient Homogeanus
If laboratory cast gels are preferred an application kit and accessories can be added to
the basic electrophoresis unit.
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
1 Introduction
The following guide summarizes how you can expand and use Multiphor II
Electrophoresis Unit with application kits and accessories.
Application
Recommended Kit/Accessory
Code No.
SDS and Native PAGE
homogeneous and gradient ge
SDS and Native PAGE, IEF Kit
Gradient Maker
18-1102-45
80-6196-09
ExcelGel SDS
Buffer Strip Positioner
80-6442-90
IEF in polyacrylamide
0.5 x 125 x 260 mm
SDS and Native PAGE, IEF Kit
18-1102-45
2-D, first dimension: Immobiline
DryStrip
Immobiline DryStrip Kit
18-1004-30
Electrophoretic transfer
NovaBlot Kit
FilmRemover
18-1016-86
18-1013-75
This User Manual is comprised of the following sections:
1.
‘‘Introduction’’ includes a general description of Multiphor II system and dedicated
precast gels, a guide to the application kits and the manual structure.
2.
‘‘Description of parts’’ describes in detail the components of Multiphor II
Electrophoresis Unit.
3.
‘‘Installation’’ contains a detailed description of how to install Multiphor II
Electrophoresis Unit and Multiphor II NovaBlot™ Unit.
4.
‘‘Operation’’ contains information on the operating procedure for SDS and native
polyacrylamide gel electrophoresis, isoelectric focusing, 2-D electrophoresis and
electrophoretic transfer.
5.
‘‘Maintenance’’ gives cleaning recommendations to help you maintain your
Multiphor II unit.
6.
‘‘Trouble shooting’’ offers suggestions for correcting problems that may occur.
7.
‘‘Multiphor II application kits and accessories’’ describes in detail the contents,
assembly and use of each Multiphor II application kit.
8.
‘‘Ordering information.’’
– Multiphor II Electrophoresis Unit, application kits, accessories and replacement parts
– MultiTemp™ and EPS
– Precast gels and buffer strips
– Molecular weight and pI markers
– Pharmalyte™ carrier ampholytes
– Gel casting and electrophoresis chemicals
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Safety information 2S
2 Safety information
To avoid any risk of injury, the instrument should be operated only by properly trained
personnel and always in accordance with the instruction provided. Read this entire
manual before using the instrument.
WARNING! Multiphor II is a high voltage instrument that can cause fatal electrical
shock if the safety features are disabled. The safety lid must be securely closed before
starting a protocol.
WARNING! The instrument is designed for indoor use only.
WARNING! Do not operate tthe system in extreme humidity (above 95% RH). Avoid
condensing by equilibrating to ambient temperature, when taking the unit from a
cooler to a waremer environment.
WARNING! Always check the wires for damage before using the unit.
WARNING! Always check that the electrodes are properly connected before using the
lid.
WARNING! Always connect the lid according to the mounting instruction.
WARNING! Always connect the cables to the Power supply BEFORE turning the Power
Supply ON.
WARNING! Always TURN OFF the Power Supply before removing the lid.
WARNING! Do NOT use concentrated acids, bases or halogenated and aromatic
hydrocarbons.
WARNING! Only use water or coolant with high electrical resistance in the cooling
plate, e.g., deionized water.
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
2 Safety information
WARNING! NEVER EXCEED the maximum pressure 0.35 bar in the cooling plate.
WARNING! NEVER EXCEED the maximum allowed voltage, current or power.
WARNING! The cooling plate is rated for operation at up to
3.5 kV (± 1750 V with floating output with reference to ground).
WARNING! When using hazardous chemicals, take all suitable protective measures,
such as wearing protective glasses and gloves resistant to the chemicals used. Follow
local regulations and instructions for safe operation and maintenance of the system.
WARNING! When using hazardous chemicals, make sure that the entire system has
been flushed thoroughly with bacteriostatic solution, e.g. NaOH, and distilled water
before service and maintenance.
WARNING! Always make sure that the surfaces around the cooling plate are clean
and dry before starting a run.
WARNING! Make sure not to spill buffer outside the buffer chambers! Clean up any
spillage immediately! There is a risk of electric shock and personal injury if there is
spilled buffer in the areas where the electrical connectors are located.
WARNING! Never use any flammable liquids in the product when it is powered!
Risk for fire!
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Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Description of parts 3
3 Description of parts
The Multiphor II Electrophoresis Unit includes; buffer tank with 4 levelling feet, cooling
plate with accessories, safety lid, electrode holder with movable EPH/IEF electrodes (for
buffer strips and electrode strips).
Unit contents – Code No. 18-1018-06
Designation
Code No
Buffer Tank
18-1122-25
Levelling Foot (4/pkg)
18-1026-40
Cooling Plate ceramic, 210 x 270 mm
18-1103-46
Grommet (2/pkg)
80-1106-58
Cooling Tubing, 8/12 mm, 4 m
80-1106-56
Tubing Connector Set 2 pcs female, 2 pcs male
18-1104-26
Hose Clamp (10/pkg)
18-1104-27
Safety Lid
18-1122-26
Electrode Holder
80-1106-55
EPH/IEF Electrode cathode
18-1122-19
EPH/IEF Electrode anode
18-1122-20
The buffer tank is made of polypropylene, which is resistant to nearly all chemicals at
room temperature.
The buffer tank contains four pin contacts. Viewing the buffer tank from the front, the
cathode pins are located to the left and the anode pins to the right.
The larger pins are for connection to the safety lid and complete the electrical circuit
when the lid is in position.
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
M
11
3 Description of parts
The small left hand pin is used to connect the EPH/IEF or card-mounted cathode
electrodes. The small pin on the right connects to the card-mounted anode or the
EPH/IEF cathode via the red lead mounted on the unit.
The buffer tank holds the four adjustable levelling feet, supports the cooling plate and
is covered during electrophoresis with the safety lid. The buffer tank includes four
buffer chambers, each with a 1 liter capacity, allowing the user to choose one of two
orientations for electrophoretic runs.
The safety lid contains electrode leads, apertures for voltage measurement, and a safety
interlock.
The well-recessed cathode connector (black) and anode connector (red) for connection to
power supplies ensure safe operation at high voltages. The polycarbonate lid snugly fits
the contours of the buffer tank. This makes it possible to reduce the atmospheric
CO2 content around the gel (important for IEF at basic pH intervals) and provides
increased protection against condensation.
NOTICE Polycarbonate is not resistant to concentrated acids and bases, or to
halogenated and aromatic hydrocarbons
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Description of parts 3
The ceramic (aluminium oxide Al2O3) cooling plate measures 210 x 270 mm, supports
the gel, and provides uniform temperature control. Aluminium oxide is an excellent heat
conductor and electrical insulating material.
WARNING! The cooling plate is rated for operation at up to 3.5 kV (± 1750 V with
floating output with reference to ground).
To facilitate the correct positioning of electrophoresis gels, the surface of the cooling
plate is screened with a template measuring 190 x 250 mm.
The two grommets are connected to the inlet and outlet tubes of the cooling plate which
can then be connected to a thermostatic ciculator such as MultiTemp.
WARNING! Only use water with high electrical resistance as coolant and NEVER
EXCEED maximum pressure of 0.35 bar.
The cooling tubing, tubing connector set and hose clamps provide a flexible and safe
way to connect Multiphor II to a thermostatic circulator such as MultiTemp.
The electrode holder holds the movable EPH/IEF electrodes. The holder keeps the
electrodes away from the gel surface during alignment and then provides a uniform
pressure over the buffer strips or electrode strips during the separation.
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13
3 Description of parts
The electrode holder consists of a double strength glass plate with ground edges and
four corner feet made of Rynite™ FR530. The electrode holder holds one anode and one
cathode electrode.
The EPH/IEF electrodes consist of moulded polysulfone bars which support the platinum
wire, held taut by stainless steel springs. The cables are spring reinforced for safety.
The anode cable (red) carries the pin contact to be connected to the socket connector on
the buffer tank.
The cathode cable (black) carries a female socket connector which fits to the buffer tank
pin connector.
Clamping nuts located at each end of the electrode allow easy adjustment of the
electrodes on the holder. The distance between the electrodes can be varied from 10 mm
to 240 mm.
NOTICE Polysulfone is not resistant to ketones, esters, halogenated and aromatic
hydrocarbons.
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Installation 4
4 Installation
For all products, check the unassembled parts against the Packing List for the respective
product to ensure that all items heve been included.
For easy connection of Multiphor II Electrophoresis Unit to the cooling device, install
tubing connectors on both inlet and outlet tubings. Use one male and one female
connector on the Multiphor II unit side and thermostat unit side respectively. The cooling
plate tubings and thermostatic circulator tubings can then be locked separately.
Two Multiphor II units can also be connected in series to one thermostatic circulator.
Place the rubber grommets on the cooling plate inlet and outlet tubes. Slide a short
piece of tubing onto each tube and secure with hose clamps. Attach the male and
female tubing connectors as described above. Repeat this process with the thermostatic
circulator using longer pieces of tubing.
To lock the connectors, insert the male connector into the female and turn clockwise
one-quarter turn until it clicks.
Screw one levelling foot into each corner of the buffer tank. Place the buffer tank on the
lab bench where it will be used. Place the cooling plate on the unit, using the moulded
guides to position it correctly. Fit the grommets into the cutouts in the back of the unit.
Place a spirit level on the cooling plate and adjust the levelling feet until the unit is
levelled.
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
15
4 Installation
To mount the EPH/IEF electrodes on the electrode holder, unscrew the clamping nut from
each electrode.
When running electrophoresis across the width of the cooling plate, mount the
electrodes as illustrated. Place the electrode under the electrode holder. Replace the nut
and lightly tighten until the electrode is held firmly in place. To align the electrodes with
the electrode strips, place the electrode holder with the electrodes onto the false holes
on the buffer tank using the four corner feet.
When running electrophoresis along the length of the cooling plate, mount the
electrodes as illustrated. Place the electrodes under the electrode holder.
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Installation 4
Replace the nut and lightly tighten until the electrode is held firmly in place. To align the
electrodes with the electrode strips, place the electrode holder with the electrodes onto
the false holes on the buffer tank using the four corner feet.
Install the safety lid.
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
17
4 Installation
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Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Operation 5
5 Operation
WARNING! When using hazardous chemicals, take all suitable protective measures,
such as wearing protective glasses and gloves resistant to the chemicals used. Follow
local regulations and instructions for safe operation and maintenance of the system.
This section, together with the information supplied with the precast gels, gives all the
necessary information to run most analytical electrophoresis techniques using our
precast gels. Running procedures for electrophoretic transfer are also included.
For laboratory cast gels, use the running conditions recommended in Electrophoresis in
Practice, A Guide to Theory and Practice by Reiner Westermeier.
Multiphor II contains two alternative electrode configurations.
– EPH/IEF electrodes for use with buffer strips or electrode strips
– EPH electrodes for use with electrode wicks and buffer chambers. This metod is used for SDS-PAGE and native PAGE.
IEF, SDS-PAGE and native PAGE are most conveniently performed using EPH/IEF
electrodes and buffer strips. The strips are applied on the gel edges with the electrodes
on top.
–
–
+
+
ExcelGel
ExcelGel
+
+
–
–
Electrode wicks
Electrode wicks
The buffer chambers are located below the cooling plate with the electrodes immersed
in buffer solution. Paper wicks connect the buffer solution with the gel.
This method is used for SDS-PAGE and native PAGE.
The optional card-mounted EPH electrodes (18-1122-19 and 18-1122-20) – for
electrophoresis using buffer chambers across the width of the cooling plate – are
moulded from polypropylene and support the platinum wire. The anode cable (red) and
cathode cable (black) carry female pin connectors for attachment to the male pins at the
front of the buffer tank.
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
19
5 Operation
5.1
Electrophoresis using ExcelGel SDS and buffer strips
This section describes the running procedure for SDS PAGE using buffer strips. The
running of ExcelGel SDS, gradient 8-18 using ExcelGel SDS buffer strips is chosen as an
example, but the basic method is applicable to all SDS PAGE and native PAGE gels.
ExcelGel SDS, gradient 8-18, is a 0.5 mm-thin, precast polyacrylamide gel for horizontal
electrophoresis of SDS denatured proteins. To facilitate handling, the gel is cast on a
plastic support. During the run, the precast SDS buffer strips supply the gel with buffer
ions. For further information, see the information supplied with ExcelGel SDS gels.
Sample preparation
Dissolve the samples in sample buffer B (for recipes, see Section 4.9 Stock solutions).
Then heat the sample solution at 95 °C for 3 minutes. The sensitivity of your
development technique and the volume of sample applied to the gel will determine the
lower limit of your sample concentration. Generally, the sample must contain 200 to 500
ng of each component for Coomassie staining, and at least 10-25 ng of each component
for silver staining. For molecular weight determination, we recommend the use of
molecular weight calibration kits LMW and HMW/SDS.
Sample application
In horizontal electrophoresis there are three methods of applying the sample: application
strips, paper pieces and sample wells. Sample application strips are put on the gel
surface, forming sample slots. Silicone rubber sample application strips are specially
designed for easy sample application.
The following application strips are available:
SDS application strips for up to 40 µl of sample in 26 slots. IEF/SDS application strips for
up to 20 µl of sample in 52 slots.
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Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Operation 5
Immobiline applicator strip for up to 5 µl of sample in 52 slots. Immobiline applicator strip
is designed to counteract lateral band spreading.
Sample application pieces hold approximately 20 µl of sample. For smaller volumes, cut
the paper pieces to an appropriate size. At least 24 application pieces size 5 x 10 mm
and 50 application pieces size 2.5 x 5 mm can be placed on one gel. Apply the sample
about 1 cm away from the cathodic buffer strip and 1 cm away from each short side of
the gel. For the best results, remove the application pieces 15 min after electrophoresis
has started.
ExcelGel SDS, ExcelGel Homogeneous 7.5, 12.5, 15 and CleanGel are available with
various numbers of sample wells for various volumes. Samples are applied directly into
the wells immediately prior to the run.
Electrophoresis
Connect Multiphor II to MultiTemp thermostatic circulator. Switch on MultiTemp
15 minutes before starting the experiment and set the temperature to 15 °C.
Always wear clean gloves when working with polyacrylamide gels and buffer strips,
particularly when using sensitive staining methods.
Remove one ExcelGel SDS from the package. Pipette 1 ml of insulating fluid (kerosene
or light paraffin oil) onto the cooling plate. Place the gel with the stiff plastic film facing
down in the middle of the cooling plate, making sure no air bubbles are trapped under
the gel. Position the gel so that the polarity of the gel corresponds to that of the plate.
Use the screened template on the cooling plate to centre the gel. Remove any excess
solution with paper tissue. Remove the protective cover film from the gel.
Open the ExcelGel SDS strip packages and apply the cathodic and the anodic SDS buffer
strips on the respective sides of the gel.
Note: The narrowest side of the buffer strip should be placed on the gel surface.
Choose an appropriate sample application method and apply the sample.
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
21
5 Operation
Place the electrode holder on the electrophoresis unit in the shallow depressions.
Align the EPH/IEF electrodes with the centre of the buffer strips by loosening the
clamping nuts and sliding the electrodes to the appropriate position. Retighten the
clamping nuts. Lift the electrode holder slightly and reposition the supporting feet over
the deep holes. Lower carefully, so that the electrodes rest on the buffer strips. Connect
the electrodes to the buffer tank.
During electrophoresis, the socket on the bridging cable MUST be attached to the pin
connector at the front of the buffer tank as shown in the picture.
Connect the two electrodes to the buffer tank using the spring-loaded cables on the
electrodes.
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Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Operation 5
Connect the socket of the cathode electrode to the pin at the front of the unit and the
anode pin to one of the sockets at the back.
Place the safety lid in position by matching the extensions on the back of the lid with
the openings on the base unit. Using the extensions at the back as a hinge, connect the
male and female banana plugs by pressing down firmly on the front of the lid.
Connect Multiphor II to the power supply. Follow the recommended electrical settings
and running times given in the instructions supplied with the precast gel.
Running conditions
Voltage
Current
Power
Time
(V)
(mA)
(W)
(min)
Run
6005030
75*
* Approximate time, or until the Bromophenol Blue front reaches the anode buffer strip.
When the Bromophenol Blue front has reached the anodic buffer strip, electrophoresis is
complete and should be stopped.
Ending the run
Turn off the power supply. Disconnect the Multiphor II unit from the power supply.
Remove the safety lid from the unit. Carefully remove the electrode holder. Gently pull
the strips from the gel and continue with detection techniques as required.
WARNING! Always TURN OFF the power supply before opening the safety lid.
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
23
5 Operation
Detection
Coomassie staining
On completion of the electrophoresis, immediately immerse the gel in Staining Tray 1
using the solutions and times indicated in table below.
The staining and destaining steps should be carried out on a shaking table.
(See section 4.9 for stock solutions). Each step requires 250 ml of solution.
Step No
Solution
Time (min)
1
2
3
4
5
6
Fixing solution C
20
Destaining solution I
2
Staining solution K
10
Destaining solution I
20
Destaining solution I30
Preserving solution L
10
Temp °C
23
23
60
23
23
23
The staining solution should be heated to 60 °C and poured over the gel. No further
heating is necessary. Destain the gel using several changes of destaining solution (I) until
the background is clear. Change the solution frequently (particularly at the beginning)
in order to speed up the destaining. To preserve the gel, soak a cellophane sheet in
preserving solution (L). Place it on the gel surface. Remove any air bubbles and wrap
the excess cellophane around the glass plate. An additional glass plate may be placed
underneath during drying to stop the cellophane from shifting or wrinkling. Leave the gel
at room temperature until it is completely dry.
Silver staining
Silver staining is performed essentially as described by. J. Heukeshoven and R. Dernick,
Electrophoreses Forum 1986, 22-27. On completion of the electrophoresis, immediately
immerse the gel in Staining Tray 1 using the solutions and times indicated in the table
below. All steps should be carried out at room temperature in daylight, while gently
shaking the solution. Use 250 ml of solution for each step. (See section 4.9 for stock
solutions).
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Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Operation 5
Time schedule for silver staining
Step No.
Solution
Time (min)
1
2
3
4
5
6
7
8
Fixing solution C30
Incubation solution D30
Distilled water3 x 5
Silver solution E
40
Developing solution F5–15 *
Stop solution G
10
Distilled water3 x 5
Preserving solution L
20
* Short development times will give a lightly stained gel. Long development times will give a dark gel.
To preserve the gel, soak a cellophane sheet in preserving solution (L) and lay it on the
gel surface. Remove any air bubbles and wrap the excess around the glass plate. An
additional glass plate may be placed underneath during drying to stop the cellophane
from shifting or wrinkling. Leave the gel at room temperature until it is completely dry.
5.2
Electrophoresis using buffer chambers
This section describes the running procedure when using buffer chambers. To place the
electrodes in the buffer chamber, remove the cooling plate from the buffer tank.
To reduce the effect of electrolysis products during the electrophoresis, the electrodes
should be positioned as far as possible from the wicks.
Therefore, when performing electrophoresis across the large cooling plate, the electrodes
should be placed in the grooves in the wall closest to the centre of the unit. The wicks lie
at the outer edge of the buffer chamber. Place the cathode electrophoresis electrode in
the left buffer chamber and the anode in the right buffer chamber.
Fill each chamber to the moulded line (indicating 1 liter volume) with buffer solution.
(When running 120 x 250 mm gels, pour 1.2 liters of buffer into each chamber to ensure
adequate buffer contact with the wicks.) Replace the cooling plate, making sure that the
electrode socket connectors lie to the front and that the connecting cable is clear of the
feet on the plate. Disconnect the anode bridging connector for isoelectric focusing and
connect the electrodes to their respective pins.
WARNING! Make sure not to spill buffer outside the buffer chambers! Clean up any
spillage immediately! There is a risk of electric shock and personal injury if there is
spilled buffer in the areas where the electrical connectors are located.
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
25
5 Operation
When performing immunoelectrophoresis or agarose electrophoresis, center a small
(84 x 94 mm) glass plate on the dry cooling plate and attach a strip of tape along the
width of the cooling plate in alignment with the edges of the glass plate. These stop the
small gels from shifting during application of the wicks and ensure that they are centred
between the two buffer chambers during electrophoresis.
Switch on MultiTemp thermostatic circulator and set the desired temperature (normally
10 °C for PAGE or agarose electrophoresis and 15 °C for SDS-PAGE) 15 minutes
before starting the experiment. To ensure efficient heat transfer from the gel during
electrophoresis, a uniform layer of a non-charged insulating fluid is applied under the gel.
To do this, pour a few milliliters of kerosene or light paraffin oil towards one end of the
cooling plate.
Starting with one end of the gel support, gradually lower the gel to the horizontal
position, constantly checking for trapped air bubbles. If air becomes trapped, raise the
gel just enough to release the air and then continue to lower it onto the cooling plate.
Use the template markings to centre the gel on the cooling plate. Remove any excess
solution with a tissue. Repeat this procedure for each gel. If voltage probe measurements
are required, the gel(s) must be positioned with the direction of the current path across
the width of the cooling plate.
Prepare the electrode wicks by aligning 8-10 pieces of filter paper for each buffer
chamber. Starting at one end, slowly immerse the electrode wicks in the buffer, using
capillary action to reduce the amount of air trapped in the paper.
When running large (195 x 250 mm) or medium sized gels (120 x 250 mm), place the
wicks so that the long edge overlaps the gel by 15 mm over the entire length. The
template markings are useful for checking that the alignment is correct.
For running small gels (84x94 mm) on the large cooling plate, place the wicks with the
short edge overlapping the gel by 15 mm. In this case, one set of wicks is required for
each gel.
Apply the samples as required. If voltage probe measurements are not required, remove
the isoelectric focusing electrodes from the electrode holder.
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Operation 5
Position the empty electrode holder so it lies directly on the electrode wicks. This
will ensure even contact between the wicks and the gel and stop any moisture from
condensing on the gel surface.
WARNING! Make sure not to spill buffer outside the buffer chambers! Clean up any
spillage immediately! There is a risk of electric shock and personal injury if there is
spilled buffer in the areas where the electrical connectors are located
Replace the safety lid on the unit and connect the Multiphor II unit to the power supply.
Set the power requirements, and start the experiment.
Typical power settings for agarose immunoelectrophoresis using buffer chambers are:
constant voltage 20 V/cm and current and power set to maximum. Run time is 40-60
minutes. Bromophenol Blue is used as a tracking dye.
Typical power settings for SDS PAGE electrophoresis using buffer chambers.
Separation distance (cm)
Voltage
(V) 8
16
Current
(mA)
Power
(W)
Time
(min
Temp
(°C)
6005030
100
15
12005030
165
15
Ending the run
Turn off the power supply. Disconnect the Multiphor II unit from the power supply. Take
off the safety lid from the unit. Carefully remove the electrode holder. Gently pull the
wicks from the surface of the gel and continue with detection techniques as required.
WARNING! Always TURN OFF the power supply before opening the safety lid. Although
user safety is not endangered, arcing may damage the contacts.
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27
5 Operation
5.3
Isoelectric focusing using CleanGel IEF
Prepare cooling and add the gel
1
Connect the Multiphor II electrophoresis unit to MultiTemp™ II thermostatic circulator and set the temperature to 10°C (15°C for IEF with urea).
2
Switch on the thermostatic circulator 15 minutes before starting the analysis.
Isoelectric focusing has to be performed at a defined constant temperature, as the
pH gradient and the isoelectric points are dependent on the temperature.
3 Position the gel on the cooling plate.
Note: Wear clean gloves to avoid contamination of the gel surface, particularly when using sensitive silver stain.
4 Pipette about 2 ml of insulating fluid (kerosene or light paraffin oil) onto the cooling
plate of the Multiphor II.
5 Remove the gel from GelPool and dry the gel surface with the edge of a filter paper
Drying the gel surface with the edge of a filter paper.
Note: The gel surface should be absolutely dry, otherwise the gel will extrude water during the isoelectric focusing.
6 Position the gel in the centre of the cooling plate, use the screen print as a guide. No
air bubbles should be trapped beneath the gel.
28
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Operation 5
Prefocusing
1 Clean the platinum electrode wires, before and after each electrophoresis run, with
a wet tissue paper.
2 Place the electrode holder with the IEF electrodes on the electrophoresis unit and
align the electrodes so that they rest on the outer edges of the gel. Electrode wicks
between the gel and the electrodes are not necessary.
3
Connect the cables of the electrodes to the unit, see illustration below.
CleanGel IEF (half a gel) placed on the Multiphor II. Samples applied at various positions
across the gradient.
4 Place the safety lid in position. Connect the power supply. Follow the recommended electrical settings and running conditions given in the table in Section ”Running conditions”
5 Prefocus for 20 minutes without samples in order to establish the pH gradient in the
gel.
Sample application
Note: If water is excluded from the gel during the prefocusing procedure it should be
removed, See illustration in previous Section “Prepare cooling and add the gel”.
In IEF there is, for most samples, one optimal position within the pH gradient for sample
application. This should be found by applying the samples at various positions across the
gradient, using sample application pieces (See illustration above).
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
29
5 Operation
There are three different methods for sample application. The optimal method is
determined primarily by the sample and the volume to be applied.
•
IEF/SDS applicator strip (Code No. 18-1002-26)
Up to 52 samples can be applied with a sample volume of 5 to 20 µl in each well.
The applicator strip is made of silicon and is applied directly on the gel surface
•
Sample application pieces (Code No. 80-1129-46)
Recommended sample volumes 15 to 20 µl, (or for smaller volumes cut the paper).
The sample application pieces are made of Paratex. These sample application
pieces are valuable when the samples are to be applied at different positions on the
gel.
•
Very small sample volumes (e.g. 2 µl) can be applied as droplets directly onto the gel
surface.
When the protein concentration is between 1 to 3 mg/ml apply 10 µl /sample, by using
an applicator strip or sample application pieces.
The pH gradient can be determined by using pI markers. Dissolve the Broad pI Kit pH 3 to
10 (Code No. 17-0471-01) according to the instructions supplied and apply 10 µl at two
different places on the gel. For determination of the calibration curve please consult the
instructions to the pI Kit.
Place the electrode and safety lid in position (Fig 6) and start the isoelectric focusing
according to Table below.
Running conditions
Recommended running conditions for one CleanGel IEF pH gradient 3 to 10.
Voltage
(V)
Current Power
(mA)
(W)
Time
(min)
Prefocusing
700
12
8
20
After this step, pause, again remove excess
fluid and place sample application pieces
onto the gel, and then apply sample onto
those pieces.
Sample
entrance
500
8
8
20
After this step, remove the sample
application pieces. If excess fluid is
observed along the cathode electrode,
gently wipe it away again at this area
avoiding the area where samples were
applied.
Isoelectric
focusing
2000
14
14
90
Band
sharpening
2500
14
18
10
For the Low pI Kit his step should omitted
due to the risk of electrical burns.
Note: If only half of a gel is used, remember to divide the current and power settings by
two
WARNING! For voltage above 1750 V
(dc), use a power supply that have
floating output with reference to ground (± 1750 V). EPS 3501 and EPS 3501 XL are
fulfilling this.
30
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Operation 5
Narrow gradients
When running narrow pH gradients e.g. pH 5 to 7, use the same electrical settings, but
prolong the isoelectric focusing time to 4 hours.
WARNING! Always turn OFF the power supply before opening the safety lid
Detection
All current detection methods used for isoelectric focusing can be used with CleanGel IEF.
In case of background staining, try a prolonged washing step after fixation by 2 hours, or
if needed over night, to eliminate this problem.
5.4
2-D electrophoresis using Immobiline DryStrip and
ExcelGel SDS
This chapter gives a brief description of the 2-D (two dimensional) electrophoresis
method using Immobiline DryStrip and ExcelGel. For more detailed information on
running conditions, please refer to the instructions supplied with Immobiline DryStrip Kit.
Isoelectric focusing using Immobiline DryStrip makes true isoelectric focusing possible
and significantly improves the reproducibility of the spot distribution along the pH
gradient axis of 2-D maps. Immobiline DryStrip also makes it possible to obtain distinct
protein spots, even of basic proteins.
The Immobiline DryStrip Kit facilitates sample application, running and equilibration
of Immobiline DryStrip for the first dimension of 2-D electrophoresis. The kit includes
the accessories necessary to run up to 12 Immobiline DryStrip strips simultaneously
on Multiphor II. Sample cup loading allows the application of up to 100 µl on each
Immobiline DryStrip.
See application Note 80-1443-47 for unultiple miniformat 2-D lectrophoresis using
ExcelGel 2-D, 12.5.
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
31
5 Operation
5.5
Electrophoretic transfer Introduction
The method of horizontal semi-dry electrophoretic transfer gives fast, even and efficient
transfer of proteins from a gel to an immobilizing membrane. The resulting membranes
may be used for a wide range of applications including general protein staining,
identification of specific antigens or antibodies (immunoblotting) and glycoprotein
detection. By using different electrode solutions and running conditions, it is possible to
transfer proteins from SDS PAGE, native PAGE, agarose gels and isoelectric focusing gels.
The speed and efficiency of the electrophoretic transfer using NovaBlot system is
dependant on:
•
Characteristics of the immobilizing membrane
•
Characteristics of the transfer buffer
•
Molecular weight and charge of the protein
•
Gel thickness and concentration of acrylamide and bisacrylamide
•
Voltage, current and transfer time
The semi-dry transfer technique uses filter papers soaked in buffer as the only buffer
reservoir. Both discontinuous and continuous buffer systems can be used in the filter
paper layers. Methanol in the buffer solution prevents swelling of polyacrylamide gels.
However, it may have the disadvantage of denaturing or fixing the proteins in the gel,
resulting in a lower transfer efficiency. Conversely, methanol may increase the protein
binding capacity of the nitrocellulose membrane by strengthening the hydrophobic
interactions. The transfer speed and efficiency can also be increased by increasing the
protein charge, i.e. adding 0.05% SDS in the transfer buffer.
The transfer is normally finished in about one hour. If it is necessary to transfer for more
than 1 hour due to unusual sample characteristics, rewetting of the cathode filter paper
is recommended. No cooling is necessary since negligible heat is produced during the
transfer.
Immobilizing membranes
The immobilizing membrane is an important factor affecting the efficiency of the
electrophoretic transfer. The most important requirements for an immobilizing
membrane are:
•
High binding capacity for the molecules of interest
•
Preservation of the biologic activity of the molecules of interest
•
No interference with subsequent detection methods
•
Chemical and mechanical stability to assay conditions
•
Provision of an accurate reflection of the original separation
Nitrocellulose membranes are the standard medium for electrophoretic transfer of
proteins and nucleic acids. This is due to their high binding capacity, versatility and
easy use. Nitrocellulose membranes are available in various pore sizes, 0.45 µm is most
commonly used, however low molecular proteins may be lost. By using pore sizes of 0.2
or 0.1 µm, most proteins are retained.
32
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Operation 5
Nitrocellulose membranes can be probed several times. The membranes require no
activation and the functional groups have an extended lifetime. Protein patterns on
nitrocellulose membranes can be easily detected with most conventional stains, as well
as by autoradiographic, immunoenzymatic and fluorescent methods.
Other membranes are: nylon-based membranes and polyvinyldifluoride (PVDF)
membranes.
Transferring proteins from SDS polyacrylamide gels to nitrocellulose
membrane.
The support (or backing) film must be removed from all polyacrylamide and agarose
gels before electrophoretic transfer. Using FilmRemover, the film is removed quickly and
cleanly. Instructions for use are supplied with FilmRemover.
1.
Saturate the graphite anode plate with distilled water and remove the excess water
with absorbent paper. With the electrode lead to the front of the instrument, fit the
lower anode plate onto the buffer tank.
Connect the anode socket (red lead) to the anode pin on the right side of the buffer tank.
The transfer sandwich can now be assembled on the anode electrode.
Note: When assembling the transfer sandwich in NovaBlot unit, always wear gloves.
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
33
5 Operation
2.
To ensure that the current passes only through the gel, cut the filter papers and the
immobilizing and dialysis membranes to the same size as the gel to be transferred.
When using a discontinuous buffer system, carefully soak the first layer of six filter
papers in anode solution R (see Section 4.9 Stock solutions) by slowly immersing the
papers under the surface of the electrode solution. Allow them to become wet by
capillary action and avoid trapping air bubbles that may interfere with the transfer.
3.
Carefully place the filter papers onto the anode electrode. When forming the first
transfer sandwich, soak a further layer of three filter papers in anode solution S
(see Section 4.9, Stock solutions), using the same method as above. Place them
on top of the six filter papers on the anode electrode plate, again taking care to
avoid trapping air bubbles. When using a continuous buffer system, all filter papers,
cathodic and anodic are wetted in the same solution.
Note: To obtain optimal transfer of molecules from the gel, care should be taken to avoid
trapping air bubbles at all stages of the assembly of the transfer sandwiches.
34
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Operation 5
4.
Cut the gel loose from the support film using FilmRemover. Do not move the gel,
leave it on FilmRemover. Wet the immobilizing membrane in electrode solution S
and carefully place it on top of the gel on the FilmRemover.
Note: Wear gloves to avoid contamination of the membrane.
5.
Loosen the support film from FilmRemover by pressing the handle and carefully lift
the whole sandwich with the support film, immobilizing membrane and gel. Turn
it over (support film up, immobilizing membrane down) and place it on the layer of
three filter papers on the anode. Carefully remove the support film. If air bubbles
become trapped under the gel, wet the surface of the gel with a few drops of
electrode solution, and gently push out the bubbles.
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
35
5 Operation
6.
Immerse nine filter papers in cathode solution T. Place these filter papers on top of
the gel to complete the transfer sandwich.
–
–
–
Filter paper (6)
Dialysis membrane
Filter paper (cathodic 3)
Slab gel
Immobilizing membrane
+
+
+
Transfer
sandwich
Filter paper (anodic 3)
Filter paper (6)
7.
Several gels of the same type and size can be transferred simultaneously. Two
transfer sandwiches can be put on top of each other. The cellophane dialysis
membrane placed between each transfer sandwich prevents crosscontamination
between transfer sandwiches.
The maximum gel size is 200 x 250 mm. If small gels (125 x 250 mm) are to be
transferred, NovaBlot will accept up to four gels for simultaneous transfer by
assembling two transfer sandwich stacks side by side.
To ensure that the current passes through the gel, all components of the transfer
sandwich are cut to the same size as the gels to be transferred.
8.
36
Saturate the cathode electrode plate with distilled water and remove any excess
with absorbent paper. Place the cathode on top of the transfer sandwich and
connect the socket on the black cathode lead to the cathode pin in the Multiphor II
base.
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Operation 5
9.
Close the Multiphor II safety lid and connect the unit to the power supply. It is
recommended to run the transfer at a constant current of 0.8 mA/cm2. A transfer
time of approximately 1 hour is normal.
Note: The current is calculated using the surface area (total length x width) of the
transfer sandwiches, and this calculation applies irrespective of the number of
transfer sandwiches in the stack.
Note: For transfer times longer than one hour turn off the power supply, remove the
safety lid and carefully lift the cathode (top) electrode without disturbing the filter
papers or gel. Carefully pour on additional transfer buffer to re-wetting the filter
paper.
10. When the transfer is complete, turn off the power supply and disconnect NovaBlot
from the power supply. Remove the safety lid and the upper cathode electrode.
Carefully disassemble the transfer sandwiches and remove the immobilizing
membranes for analysis. If necessary, save and stain the gel to monitor the transfer
efficiency.
Clean the electrodes with distilled water.
WARNING! Always turn off the power supply before opening the safety lid. Although
user safety is not endangered, arcing may damage the contacts.
Detection methods
Following electrophoretic transfer, the membrane can be stored, stained or probed
immediately.
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
37
5 Operation
Further reading
Electrophoresis in Practice: A guide to theory and practice. Westermeier, R., Ed., (1993)
VCH Verlagsgesellschaft mbH. Weinheim. Westermeier, R.
Beisiegel, U., Electrophoresis, 7, 1-18 (1986)
Kyhse-Andersen, J., J. Biochem. Biophys. Meth., 10, 203 (1984)
Naaby-Hansen, S., Lihme, A. O. F., Bog-Hansen, T.C., Bjerrum, O.J., in Lectins-Biology,
Biochemistry, Clinical Biochemistry, Walter de Gruyter & Co., Berlin & New York, 241 (1985)
Handbook of immunoblotting of proteins. ed. Bjerrum, O. J. & Heegaard, N. H. H., CRC
Press, Florida, USA, Volume 1 Technical descriptions, Volume II experimental and clinical
applications.
Hancock, K. and Tsang, V.S.W., Anal. Biochem. 133, 157-162 (1983)
Towbin, H., Staehlin, T., Gordon, J., Proc. Natl. Acad. Sci. USA, 76, 4350- 4354 (1979)
5.6
Stock solutions
B. Sample buffer
0.050 mol/l Tris-HAc pH 7.5
Dissolve 0.3 g Tris in 40 ml distilled water. Carefully adjust to pH 7.5 with HAc
(approximately 0.14 ml). Make up to 50 ml with distilled water. Add 0.4 g SDS and a few
grains of Bromophenol Blue. Immediately before use add 40 mg of DTT.
C. Fixing solution
Ethanol
Acetic acid, HAc
Make up to 1000 ml with distilled water.
400 ml
100 ml
D. Incubation solution
Ethanol
Sodium acetate
Glutaraldehyde (25% w/v)
Sodium thiosulphate, Na2S2O3 x 5H2O
Make up to 250 ml with distilled water.
75 ml
17.00 g
1.25 ml
0.50 g
E. Silver solution
Silver nitrate
0.25 g
Formaldehyde50 µl
Make up to 250 ml with distilled water.
F. Developing solution
Sodium carbonate
Formaldehyde
Make up to 250 ml with distilled water.
6.25 g
25 µl
G. Stop solution
EDTA-Na2 x 2H2O3.65 g
Make up to 250 ml with distilled water.
H. Preserving solution
Glycerol (87% w/w)
Make up to 250 ml with distilled water.
38
25 ml
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Operation 5
I. Destaining solution
Ethanol
Acetic acid
Make up to 1000 ml with distilled water.
K. Coomassie solution
PhastGel Blue R
Make up to 400 ml with destaining solution.
Heat to 60 °C, stirring constantly, and filter before use.
L. Preserving solution
Glycerol (87% w/w)
Make up to 250 ml with destaining solution.
N. Fixing solution
Trichloroacetic acid
Make up to 500 ml with distilled water.
Transfer buffers using a discontinuous buffer system
250 ml
80 ml
1 tablet
25 ml
100 g
R. Anode solution 1, pH 10.4
Tris36.3 g
Methanol
200 ml
Make up to 1000 ml with distilled water.
S. Anode solution 2, pH 10.4
Tris3.03 g
Methanol
200 ml
Make up to 1000 ml with distilled water.
T. Cathode solution, pH 7.6
6-Amino-n-hexanoic acid5.20 g
Methanol
200 ml
Make up to 1000 ml with distilled water
U. Transfer buffer using a continuous buffer system
Glycine
2.93 g
Tris5.81 g
SDS
0.375 g
Methanol
200 ml
Make up to 1000 ml with distilled water.
Note: In a continuous buffer system, this solution is used for both anode and cathode
electrode solutions.
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
39
5 Operation
5.7
Running conditions for precast gels
ExcelGel SDS Gradient 8–18
Running conditions
Phase
Voltage
(V)
Run
Current
(mA)
Power
(W)
6005030
Time
(min) Temp
°C
75*
15
* Or until the Bromophenol Blue front reaches the anode buffer strip.
ExcelGel XL SDS Gradient 12-14
Running conditions
Phase
Voltage
(V)
Current
(mA)
Power
(W)
Time
(min)
Temp
°C
Run
40
40
165*
15
1000
* Or until the Bromophenol Blue front reaches the anode buffer strip.
ExcelGel SDS Homogeneous 7.5, 12.5 and 15
Running conditions
ExcelGel SDS
Voltage
Homogeneous
(V)
7.5 and 12.5
15
Current
(mA)
Power
(W)
6005030
6003030
Time
(min)
Temp
°C
80*
140*
15
15
* Or until the Bromophenol Blue front reaches the anode buffer strip.
CleanGel IEF 3–10
Running conditions for one CleanGel IEF 3–10.
Phase
Voltage
Current
(V)
(mA)
Power
(W)
Prefocusing  700
12  8
Sample entry 500  8  8
Isoelectric focusing
2000
14
14
Band sharpening
2500
14
18
Time
(min)
Temp
°C
20
20
90
10
10
10
10
10
If half a gel is used, halve the current and power settings.
WARNING! For voltage above 1750 V
(dc), use a power supply that have
floating output with reference to ground (± 1750 V). EPS 3501 and EPS 3501 XL are
fulfilling this.
40
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Operation 5
2-D electrophoresis using Immobiline DryStrip and ExcelGel SDS
First dimension
Option 1: EPS 3501 XL Power Supply, using a voltage gradient.
The parameters below may be used for up to 12 strips.
Programme for Immobiline DryStrip, pH 3–10, 110 mm. All steps are run at 10 °C.
Phase Voltage
(V)
Current
(mA)
Power
(W)
Time
(h)
Vh
1 300
15
0.1
1
2 300
15
4.5
1350
3
2000
1555750
4
2000
15
6.5
13000
Total
16
20100*
Programme for Immobiline DryStrip, pH 3–10 L, 180 mm. All steps are run at 10 °C.
Phase Voltage
(V)
Current
(mA)
Power
(W)
Time
(h)
Vh
1 500
15
0.1
1
2 500
153
1500
33500
155
10000
43500
15
12.5
43750
Total
20.555250*
WARNING! For voltage above 1750 V
(dc), use a power supply that have floating
output with reference to ground (± 1750 V). EPS 3501 and EPS 3501 XL are fulfilling
this.
Programme for Immobiline DryStrip, pH 3–10 NL, 180 mm. All steps are run at 10 °C.
Phase
Voltage
(V)
Current
(mA)
Power
(W)
Time
(h)
Vh
1 500
15
0.1
1
2 500
155
2500
33500
155
10000
43500
15
9.532400
Total
19.5
44900*
Programme for Immobiline DryStrip, pH 4–7, 110 mm. All steps are run at 10 °C.
Phase
Voltage
(V)
Current
(mA)
Power
(W)
Time
(h)
Vh
1 300
15
0.1
1
2 300
15
6
1800
33500
155
9500
43500
155.5
19250
Total
16.530550*
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
41
5 Operation
Programme for Immobiline DryStrip pH 4–7, 180 mm. All steps are run at 10 °C.
Phase
Voltage
(V)
Current
(mA)
Power
(W)
Time
(h)
Vh
1 500
15
0.1
1
2 500
15
1500
33500
155
10000
43500
15
1035000
Total
16
45500*
* The optimal total number of Volt-hours for these pH gradients depends on the type of sample, sample load (µg) and sample
volume.
WARNING! For voltage above 1750 V
(dc), use a power supply that have
floating output with reference to ground (± 1750 V). EPS 3501 and EPS 3501 XL are
fulfilling this.
Option 2: Using a Manual Power Supply
The power supply should run at constant voltage with the parameters set as below. All
steps are run at 10 °C.
Running conditions for Immobiline DryStrip, pH 3–10, 110 mm.
Phase
Voltage
(V)
Current
(mA)
Power
(W)
Time
(h)
Vh
1 300
15
1300
2
15
14–15
1400
20000
Running conditions for Immobiline DryStrip, pH 3–10 L, 180 mm.
Phase
Voltage
(V)
1 500
23500
Current
(mA)
Power
(W)
15
15
Time
(h)
Vh
1500
15–1655000
Running conditions for Immobiline DryStrip pH 3–10 NL 180 mm.
Phase
Voltage
(V)
1 500
23500
Current
(mA)
Power
(W)
15
15
Time
(h)
Vh
1500
13
45000
Running conditions for Immobiline DryStrip, pH 4–7, 110 mm.
Phase
Voltage
(V)
1 300
2
2200
42
Current
(mA)
Power
(W)
15
15
Time
(h)
Vh
1300
13.5
29700
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Operation 5
Running conditions for Immobiline DryStrip, pH 4–7, 180 mm.
Phase
Voltage
(V)
1 500
23000
Current
(mA)
Power
(W)
15
15
Time
(h)
Vh
1500
14.5
43500
WARNING! For voltage above 1750 V
(dc), use a power supply that have
floating output with reference to ground (± 1750 V). EPS 3501 and EPS 3501 XL are
fulfilling this
Second dimension
Running conditions for ExcelGel XL SDS gradient 12–14.
Step
Voltage
(V)
Current
(mA)
Power
(W)
Time
(min)
1
2
3
1000
1000
1000
20
40
40
40
45*
405**
40
160***
Temp.
(° C)
15
15
15
Running conditions for ExcelGel SDS gradient 8–18.
Step
Voltage
(V)
Current
(mA)
Power
(W)
Time
(min)
1
2
3
600
2030
25-30*
60050303-5**
6005030
70***
Temp.
(° C)
15
15
15
* When the Bromophenol Blue dye front has moved 4-6 mm for ExcelGel XL SDS gradient 12–14 and 1–2 mm for ExcelGel
SDS, gradient 8–18 from Immobiline DryStrip, remove the strip and the application pieces.
** When the front has moved a further 2 mm, move the cathodic buffer strip forward to cover the area of removed
Immobiline DryStrip by 1–2 mm. Adjust the position of the cathodic electrode.
***When the Bromophenol Blue front has just reached the anodic buffer strip, electrophoresis is continued for 5 min and
should then be stopped. Remove the buffer strips.
Further information about the gels and running conditions are supplied with the
products.
Running conditions for ExcelGel 2-D Homogeneus 12.5
Phase
Voltage
(V)
Current
(mA)
1
2
600
2030
6005030
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Power
(W)
Duration
(h:min)
~0:351
~1:152
43
5 Operation
44
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Maintenance 6
6 Maintenance
WARNING! Remove liquid or dirt from the system surface using a cloth and, if
necessary, a mild cleaning agent.
WARNING! When using hazardous chemicals, take all suitable protective measures,
such as wearing protective glasses and gloves resistant to the chemicals used. Follow
local regulations and instructions for safe operation and maintenance of the system.
WARNING! When using hazardous chemicals, make sure that the entire system has
been flushed thoroughly with bacteriostatic solution, e.g. NaOH, and distilled water
before service and maintenance.
A few standard measures are necessary to keep Multiphor II in full functioning order.
After isoelectric focusing, remove the electrodes from the electrode holder and rinse with
distilled water to remove the strong acidic and basic solutions. Do not submerge the
cable containing the pin or socket. Air dry or carefully dry with paper tissue. Check that
the platinum wire is not damaged.
After electrophoresis using the buffer chambers, remove the electrodes. Rinse them in
distilled water and air dry. Take care not to damage the platinum electrodes.
Rinse the buffer chambers with distilled water between buffer changes and after use. Do
not immerse the socket connector. Air dry or carefully dry with a paper towel.
Following electrophoretic transfer, remove all remaining filter papers from the NovaBlot
unit. Remove the anode and cathode plates and rinse them in distilled water. Do not
immerse the electrode leads in water. Leave to air dry. For longer life of NovaBlot
electrodes store them either by:
1. Placing 3 cm thick plastic foam between the electrodes as if for transfer
or
2. Store the electrodes on “backs” without foam sandwiched between.
6.1
Recycling
This symbol indicates that the waste of electrical and electronic equipment must not
be disposed as unsorted municipal waste and must be collected separately. Please
contact an authorized representative of the manufacturer for information concerning the
decommissioning of equipment.
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
45
6 Maintenance
46
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Technical specifications 7
7 Technical specifications
Maximum Voltage3500 V
Ground)
(dc), ± 1750 V floating output with reference to
Maximum Power
100 W
Max pressure
cooling plate
0.35 bar
Dimensions
16 x 31 x 40 cm
Weight
4 kg
Environment
4ºC to 40ºC, 20% to 95% relative humidity
Material of
wetted parts
Chemical resistance
The wetted parts are resistant to solvents commonly used in electrophoresis and solutions containing inorganic and organic acids, alkalis and alcohols.
Compliance with standards
The declaration of conformity is valid for the instrument only if it is:
• used in laboratory locations
• used in the same state as it was delivered from
GE Healthcare except for alterations described in the User Manual
• connected to other CE labelled GE Healthcare modules or other products as recommended.
Safety standards
This product meets the requirement of the Low Voltage Directive (LVD) 2006/95/EC through the following harmonized standards:
• EN 61010-1
• IEC 61010-1
• CAN/CSA-C22.2 No. 61010-1
• UL61010-1
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
47
7 Technical specifications
48
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Trouble shooting 8
8 Trouble shooting
WARNING! Always TURN OFF the Power Supply before opening the lid.
Trouble shooting guide to PAGE
Symptom
Cause
Remedy
No current reading
Safety plug improperly inserted
in power supply outlet
Check the safety plug
insertion
Pin and socket connection from
electrode to base incomplete
Check the pin and socket
connections
Anode bridging
contact disconnected
Connect the bridging contact
Banana plug connection in safety
lid not completed
Press firmly on the safety lid
Electrode holder not seated properly
Lower the electrode holder so
that the electrodes are in contact
with the electrode strips
Poor contact between the electrodes
and electrode strips
Check that the electrodes are
clean and intact, and sit in the
centre of the isoelectric focusing
strips over the entire length
Uneven migration of
the dye front
Bad electrical contact between the gel
and the wicks and electrodes
Poor cooling
Check the contact
Burning at slots or
accumulation of
water in the slots
Polypeptide complexes are too big to
enter the gel and cause
electroendosmosis
If SDS PAGE, add DTT once
again and boil the sample
Cause
Electrode strips applied incorrectly
in relation to electrode polarity
Remedy
Check the electrode polarity
and the pH of the electrode strips
Check the cooling
Trouble shooting guide to IEF
Symptom
Current increases
with time
Cathode and anode
polarities reversed
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Check the pin and socket
connections, the gel orientation
and the pH of the applied
electrode strips.
49
8 Trouble shooting
Symptom
Cause
Remedy
Sparking on the gel
Gel dried out, insufficient cooling
Water droplets on gel
Excessive condensation
Check the temperature and flow
of the cooling fluid. Lower the
power
Decrease condensation by
adjusting the temperature of the
cooling fluid. Wipe the electrode
holder periodically to remove
condensation
Drying out of the gel
Incorrect electrode solutions
near the electrodes
Use the recommended electrode
solution at the specified
concentration.
Excessive power setting
Check the power setting
Sparking along edge
of gel onto cooling plate
Excess moisture on gel or under
cooling plate
Remove the excess moisture
Electrode strips overhanging the
ends of the gel
Cut the electrode strips short
of the ends of the gel
Liquid expelled at sides of electrode
strips due to electroendosmotic
of water towards the cathode
Occasionally remove the excess
flow fluid by blotting
Condensation over the
Excessive power setting
entire surface of the glass
electrode holder
Check the power setting.
When only a portion of the gel is
used, reduce the power setting
proportionally
Insufficient cooling
Check the temperature and flow
of the cooling fluid
Local condensation on
Local overheating due to a high salt
the glass electrode holder
concentration in the sample
Reduce the salt content of the
sample by gel filtration using
PD-10 columns pre-packed with
Sephadex G-25
Incorrect electrode solutions in relation
to electrode polarity
Check the electrode polarity.
Check the pH of the applied
electrode strips
Use insulating fluid under the gel
and check for air bubbles
Localized hot spots due to air
bubbles under the gel
Excessive amount of
Cathodic drift may cause an
condensation along
electroendosmotic flow of water
electrode strips
towards the cathode. Thus, cathode
strip may become over saturated
Reversed polarity of electrode strips
(lower pH at cathode, higher
pH at anode)
50
Cut the electrode strips shorter
than the edge of the gel. If
necessary, blot the pooled liquid.
Check pH of the strips and
polarity of the plugs in the power
supply. Reverse polarity if the
strips have been incorrectly
applied (should be acid at anode)
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Trouble shooting 8
Symptom
Cause
Remedy
Skewed or wavy bands
Localized gradient disturbances
due to excessive salt
Reduce the salt content of the
sample by gel filtration using PD10 columns pre-packed with
Sephadex G-25. Salt content
should be <50 mmol/l.
Too much ammonium
persulphate may also cause wavy
bands
Unevenly wetted electrode strips
Electrode strips must be evenly
wetted and be neither too wet
nor too dry
Electrode strips too short
The strips should be cut just
short of the edges of the gel
Symptom
Remedy
Trouble shooting guide to electrophoretic transfer
Cause
Incomplete transfer
Gel concentration too high
Use reversible cross-linkers (e.g.
DATD, BAC, DHEBA) and
depolymerize gel before transfer.
Lower monomer concentration.
Convert molecule to smaller form
by limited digestion with
proteases (for proteins) or with
nucleases or acid hydrolysis (for
nucleic acids)
Methanol present in transfer buffer
Remove methanol from transfer
buffer
Transfer time too short
Increase transfer time
Field strength too low
Increase field strength
Too low charge/mass ratio
Change transfer buffer pH
further away from molecules pI.
Add 0.1% SDS
Poor transfer
Air trapped between gel and membrane
Carefully push out all air bubbles
from the layers of the transfer
sandwich
Inefficient transfer
Too low binding efficiency
(molecules migrate from the gel,
but pattern is faint)
Use different immobilizing
membrane (DEAE, NC, DBM,
DPT). Immobilizing membrane
needs to be activated. Remove
interfering substances
(denaturants, detergents).
Raise/lower salt concentration.
Raise/lower pH
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
51
8 Trouble shooting
Symptom
Cause
Field strength too high
(e.g. low Mol. Wt. DNA)
Remedy
Lower field strength
Transfer time too long
Shorten transfer time
Pore size too large
52
With nitrocellulose, use smaller
pore filters (0.1 or 0.7 µm)
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Multiphor II application kits and accessories 9
9 Multiphor II application kits and accessories
This section describes the contents of the Multiphor II application kits and accessories
and provides instructions for assembly and use. For experimental details including
preparation of samples and stock solutions, running conditions, staining and
preserving procedures see Chapter 4. Operation. Further information can be found in
“Electrophoresis in Practice” – Code No. 18-1104-12.
9.1
SDS and Native PAGE, IEF Kit
This kit is used for casting 0.5 mm homogeneous or gradient polyacrylamide gels. The
gels are cast on a 1 mm thick glass plate (125 x 260 mm). Alternatively, casting can be
done on GelBond™ PAGfilm (124 x 258 mm). Optional glass plates with U-frames allow
casting of 1.0 and 2.0 mm thick gels. The kit includes sample application pieces and
strips for applying the sample onto the gel surface. An optional template and tape allow
preparation of a slot-former.
Kit contents – Code No. 18-1102-45
Designation
Glass Plate, 125 x 260, 0.5 mm U-frame (2/pkg)
Glass Plate, 125 x 260x1 mm (15/pkg)
Glass Plate, 125 x 260x3 mm (2/pkg)
Code No.
80-1106-89
80-1106-29
80-1106-99
FlexiClamp (6/pkg)
18-1013-73
IEF Electrode Strip (100/pkg)
Electrophoresis Wick 104 x 253 mm (500/pkg)
18-1004-40
80-1129-52
IEF Sample Application. Pieces (200/pkg)
IEF/SDS Sample Application. Strip, 52 samples 5–20 µl
(5/pkg)
80-1129-46
Cellophane Sheets (50/pkg)
80-1129-38
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
18-1002-26
53
9 Multiphor II application kits and accessories
Optional accessories
Designation
Roller
GelBond PAGfilm, 124 x 258 mm (50/pkg)
Bind-Silane, 100 ml
Repel-Silane, 500 ml
Code No.
80-1106-79
80-1129-36
17-1330-01
17-1332-01
SDS Sample Application Strip, 26 samples, 40 µl
18-1002-74
Gradient Maker SG 100, 100 ml
80-6196-09
Glass Plate, 125 x 260 mm, 1,0 mm U-frame (2/pkg)
Glass Plate, 125 x 260 mm, 2,0 mm U-frame (2/pkg)
80-1106-91
80-1106-92
The 3 mm thick glass plate is used as a support, either for the 1 mm glass plate or
GelBond PAGfilm. The mould comprising the 3 mm glass plate, 1 mm glass plate
or GelBond PAGfilm and glass plate with U-frame is clamped together using four
FlexiClamps.
To prepare a slot-former for individual sample slots, a glass plate with Uframe, tape,
0,25 x 9 mm, and a template should be used. One or several layers of tape can be
applied to the glass plate. For instance, 3 layers of 5 x 3 mm will make a sample slot for
10-20 µl of sample. Wash the glass plate with detergent, rinse with distilled water and
dry with a paper tissue. Apply tape 30 mm from the open edge of the U-framed glass
plate avoiding air bubbles. Check that all edges of the tape are cut perfectly even. Leave
the slot former over night to ensure that the tape adheres completely.
54
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Multiphor II application kits and accessories 9
To prevent the gel from sticking to the U-framed glass plate, coat the plate with
Repel-Silane.
Note: For this operation use gloves and a fume hood.
Pour about 2 ml of Repel-Silane onto the glass plate and distribute it evenly with a tissue.
Leave it to dry for a few minutes. Rinse the glass plate with distilled water and remove
water drops by shaking or wiping lightly with a tissue. Leave the glass plate to dry.
When using the 1 mm thick glass plate as the gel support, simply lay it directly on top of
the 3 mm thick glass plate. If the gel is to be permanently bound to the 1 mm thick glass
plate, coat the plate with Bind-Silane, before preparing the mould.
Note: For this operation use gloves and a fume hood.
Pour about 2 ml of diluted Bind-Silane onto the glass plate and distribute it evenly with a
tissue. Leave the glass plate to dry for a few minutes, rinse with distilled water and leave
to dry.
When using GelBond PAGfilm, pour a few ml of water on to the 3 mm thick glass plate
and lay the film over it with the hydrophilic side up (see Instructions supplied with the
film). Centre the film on the glass plate. Beginning at one end, use the roller to apply even
pressure over the film surface in order to eliminate air bubbles and seal the film to the
plate with a minimum of water. Remove any excess water with a tissue.
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
55
9 Multiphor II application kits and accessories
Form the mould by placing the U-framed glass plate in position and clamp together
using four FlexiClamps.
Note: Gloves must be worn to protect the user from contact with the toxic acrylamide
solution.
Draw the gel solution into a syringe or a graduated pipette. Fill the mould, checking that
air bubbles are not trapped along the rubber U-frame or around the slots.
When casting a gradient gel, position the mould horizontally using the Levelling Set and
place the Gradient Maker as illustrated. Lay the end of the tubing from the Gradient
Maker against the 1 mm glass plate or GelBond PAGfilm. The slot-former will otherwise
disturb the flow of the solution.
To open the 1 mm glass plate mould, remove the four FlexiClamps. Carefully insert one
or two thin-bladed spatulas between the gel surface and slot former on one of the short
sides. Twist gently in order to introduce air across the whole of the short side. Twist
more firmly to slowly separate the U-frame from the gel surface. Remove the U-frame.
Carefully remove any unpolymerized acrylamide from the edge of the gel with a paper
tissue. Separate the gel support from the thick glass plate. The gel is now ready to use.
To open the mould including GelBond PAGfilm, remove the four FlexiClamps and insert
the spatula between the 3 mm thick glass plate and film. Remove the glass plate and dry
the back of the film. Turn the mould upside down (with the glass plate with U-frame on
top) and gently peel the film with gel away from the glass.
56
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Multiphor II application kits and accessories 9
9.2
Buffer Strip Positioner
The Multiphor II Buffer Strip Positioner is a frame with slots thats sits on top of an
ExcelGel SDS gel on the Multiphor II cooling plate. Theslots in the positioner facilitate
placement of the buffer strips for electrophoresis and hold them securely in place. A
locking cam secures the positioner on the cooling plate.
Fig. 1. Features of the Multiphor II Buffer Strip Positioner
Slot#
1
2
3
4
Use for placing
Cathodic buffer strip, Phase 1 or entire ruun
Sample wells
Immobiline DryStrip gels (IPG strips), Phase 1
Cathodic buffer strip, Phase 2
Anodic buffer strip (with 11 x 25 cm ExcelGel SDS gels)
Anodic buffer strip (with 18 x 25 cm ExcelGel SDS gels
Designation
Multiphor II Buffer Strip Positioner
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Code No.
80-6442-90
57
9 Multiphor II application kits and accessories
9.3
Immobiline DryStrip Kit
This kit is used for running IEF with Immobiline DryStrip for the first dimension in 2-D
electrophoresis. Twelve strips can be focused simultaneously under a protective layer
of silicone oil. The high sample capacity allows the application of up to 100 µl on each
Immobiline DryStrip. Detailed instructions for use are available in the instruction manual
provided with this kit.
Kit contents - Code No. 18-1004-30
58
Designation
Code No.
Tray and Electrode Holder
18-1004-31
DryStrip Aligner (4/pkg)
18-1004-34
DryStrip Kit Electrode, cathode
18-1018-67
DryStrip Kit Electrode, anode
18-1018-66
Sample Cup Bar
18-1004-33
Sample Cup (6 x 10/pkg)
18-1004-35
IEF Electrode Strip (100/pkg
18-1004-40
IEF Sample Application. Piece (200/pkg)
80-1129-46
Instruction Manual
18-1038-63
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Multiphor II application kits and accessories 9
9.4
NovaBlot Kit
This kit is used for electrophoretic transfer of proteins from polyacrylamide or agarose
gels to an immobilizing membrane. The maximum gel size is 200 x 250 mm.
By building transfer sandwiches, simultaneous transfer from several gels of the same
type can be achieved. Up to six transfer sandwiches can be stacked one on top of the
other.
If 125 x 250 mm gels are to be transferred, NovaBlot accepts up to six gels for
simultaneous transfer by assembling two transfer sandwiches side by side.
The operating procedures for NovaBlot Kit and FilmRemover are described and illustrated
in Sections 4.8 and 7.13 respectively.
Kit contents – Code No. 18-1016-86
Designation
Code No.
NovaBlot Electrode, cathode
18-1019-86
NovaBlot Electrode, anode
80-1257-87
Electrode Paper NovaBlot, 200 x 250 mm (500/pkg)
80-1106-19
Cellophane Sheets, 210 x 320 mm (50/pkg)
80-1129-38
Optional accessories
Designation
Code No.
FilmRemover
18-1013-75
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
59
9 Multiphor II application kits and accessories
9.5
FilmRemover
FilmRemover is used for removing backing from a gel before electrophoretic transfer.
Polyacrylamide or agarose gels with a thickness between 0.1 mm and 5.0 mm and a
maximum gel size of 200 x 245 mm can be used.
Detailed instructions for the use of FilmRemover are available in the instruction manual
provided with the product.
60
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Multiphor II application kits and accessories 9
9.6
Roller
For use when applying plastic support films onto glass plates with an interfacing fluid.
The roller is used to provide even pressure over a large area, ensuring adhesion with a
minimum amount of fluid and elimination of bubble formation.
Designation
Code No.
Roller
80-1106-79
Several accessories are available for simple and convenient sample application with
Multiphor II.
9.8
Sample application accessories
Designation
Code No.
IEF Sample Application Pieces (200/pkg)
80-1129-46
The 5 x 10 mm sample application piece made of Paratex can be used for sample
volumes in the range 15–20 µl.
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
61
9 Multiphor II application kits and accessories
Up to 52 samples can be applied with this strip. Each well holds up to 20 µl of sample.
The applicator strip is made of flexible silicone and is applied directly onto the gel
surface.
Designation
Code No.
SDS Sample Application Strip 26 samples, 40 µl
18-1002-74
This strip is recommended for sample application on SDS gradient gels without
preformed slots, e.g. ExcelGel SDS, gradient 8–18. Up to 26 samples can be applied and
each well holds up to 40 µl of sample. The strip is made of transparent flexible silicone
and is applied directly onto the gel surface.
Designation
Code No.
IEF/SDS Sample Application Strip 52 samples, 5–20 µl
18-1002-26
This applicator strip is recommended for use with PAGIEF gels, and SDS gradient gels
without preformed slots, e.g. ExcelGel SDS, gradient 8–18. Up to 52 samples with a
sample volume of 5–20 µl can be applied in each well.
The applicator strip is made of flexible silicone and is applied directly on the gel surface.
62
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Multiphor II application kits and accessories 9
Designation
Code No.
EPH/IEF Sample Application Foil 24 samples, 2–4 µl
80-1129-47
This application foil with narrow slits is recommended for electrophoresis and IEF in
agarose gels. Up to 24 samples can be applied, with a sample volume of 2–4 µl in each
slit. The foil is applied directly on the gel surface.
Designation
Code No.
EPH Electrode anode, long
18-1122-20
EPH Electrode cathode, long
18-1122-19
The electrophoresis electrodes are designed for use with the buffer vessels at the side of
the buffer tank, allowing electrophoresis along the width of the cooling plate.
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
63
9 Multiphor II application kits and accessories
64
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Ordering information 10
10 Ordering information
WARNING! Only spare parts approved or supplied by GE Healthcare may be used for
maintaining and servicing of MULTIPHOR ll
10.1 Multiphor II
Product
Quantity
Code No.
Basic configuration
Multiphor II
Electrophoresis Unit
1
18-1018-06
Application kits and accessories
SDS and Native PAGE,
IEF Kit
1
18-1102-45
Immobiline DryStrip Kit
for running 1 to 12 Immobiline
DryStrip gels (for use with
Multiphor II only)
1
18-1004-30
NovaBlot Kit
for electrophoretic transfer
1
18-1016-86
Multiphor II Buffer Strip Positioner, complete
1
80-6442-90
FlexiClamps
6
18-1013-73
FilmRemover
for removing plastic gel backing
before electrophoretic transfer
1
18-1013-75
Gradient Maker, 100 ml
1
80-6196-09
Roller
1
80-1106-79
Lever and Wire Assemblies
(for Film-Remover)3
18-1013-79
Levelling Feet
4
18-1026-40
Cooling plates
Cooling Plate
ceramic, 210 x 270 mm
1
18-1103-46
Grommets
2
80-1106-58
Cooling Tubing, 8/12 mm
4 m
80-1106-56
Tubing Connector Set,
female and male
4
18-1104-26
Insulation for Cooling
Tubing 14/27 mm
8 m
80-1116-11
Anade and Cathode Electrode
1
18-1037-44
Leads (for 18-1004-31 Immobline DryStrip Kit Tray)
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
65
10 Ordering information
66
Product
Quantity
Code No.
Electrodes and electrode holders
EPH/IEF Electrode, anode
1
18-1121-53
EPH/IEF Electrode, cathode
1
18-1121-52
Electrode Holder
(for 18-1106-60/-61)
1
80-1106-55
EPH Electrode (long),
anode
1
18-1122-20
EPH Electrode (long),
cathode
1
18-1122-19
Electrode (Immobiline
DryStrip Kit), anode
1
18-1018-66
Electrode (Immobiline
DryStrip Kit), cathode
1
18-1018-67
Tray and Electrode Holder
for 18-1018-66/-67
1
18-1004-31
NovaBlot Electrode,
anode
1
80-1257-87
NovaBlot Electrode,
cathode
1
18-1019-86
Glass plates and trays
125 x 260 x 3 mm
2
80-1106-99
125 x 260 x 1 mm
15
80-1106-29
125 x 260 mm, 0.5 mm
U-frame
2
80-1106-89
125 x 260 mm, 1.0 mm
U-frame
2
80-1106-91
125 x 260 mm, 2.0 mm
U-frame
2
80-1106-92
Glass plate treatment
Bind-Silane
100 ml
17-1330-01
Repel-Silane ES500 ml
17-1332-01
Gel support
GelBond PAGfilm,
124 x 258 mm50
80-1129-36
Paper electrode strip and wicks
IEF Electrode Strip
100
18-1004-40
EPH Electrode Wick,
82 x 130 mm500
80-1129-53
EPH Electrode Wick
104 x 253 mm (also used
as PEGG print paper
and with agarose IEF)500
80-1129-52
Electrode Paper NovaBlot,
200 x 250 mm500
80-1106-19
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Ordering information 10
Product
Quantity
Code No.
Sample application
SDS Sample Application Strip,
26 samples, 40 µl5
IEF/SDS Sample Application Strip,
52 samples, 5–20 µl5
IEF Sample
Application Pieces
200
Sample Cups,
Immobiline DryStrip Kit
60
18-1002-26
Preserving
Cellophane Sheets,
210 x 320 mm50
Mylar™ Sheets,
125 x 260 mm
50
80-1129-38
18-1002-74
80-1129-46
18-1004-35
80-1129-39
10.2 MultiTemp IV
Product
Quantity
Code No.
MultiTemp IV
thermostatic circulator, 115 V/60 Hz
MultiTemp IV
thermostatic circulator, 230 V/50 Hz
MultiTemp IV thermostatic circulator 100 V, 50/60 Hz
Cooling Tubing, 8/12 mm
1
28-9941-72
1
28-9941-71
1
29-0096-30
4 m
80-1106-56
4
18-1104-26
2 m
1
80-1116-11
18-1106-39
Product
Quantity
Code No.
EPS 3501 XL
35-3500 V, 1–400 mA
EPS 3501
35-3500 V, 1–150 mA
EPS 1001
5-1000 V, 1–400 mA
EPS 601
6-600 V, 1–400 mA
EPS 301
5-300 V, 1-400 mA
1
18-1130-05
1
18-1130-04
1
18-1130-03
1
18-1130-02
1
18-1130-01
Tubing Connector Set,
female and male
Insulation for Cooling
Tubing 14/27 mm
3-way Valve Set
10.3 EPS Power Supplies
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
67
10 Ordering information
10.4 Precast gels and buffer strips
68
Product
Quantity
Code No.
SDS-PAGE and Native PAGE
ExcelGel SDS Homogeneous 7.5
6
80-1260-01
ExcelGel SDS Homogeneous 12.5
6
80-1261-01
ExcelGel SDS Homogeneous 15
6
80-1262-01
ExcelGel SDS, gradient 8–18
6
80-1255-53
ExcelGel XL SDS, gradient 12–143
17-1236-01
ExcelGel SDS Buffer Strips
anode and cathode
17-1342-01
6 each
IEF
CleanGel IEF5
GelPool for gel rehydration 1
18-1035-32
18-1031-58
Immobiline DryStrip Gels
Immobiline DryStrip pH 3.5–4.5, 24 cm
17-6002-38
12
Immobiline DryStrip pH 6–9, 24 cm
12
17-6002-47
Immobiline DryStrip pH 3–7 NL, 24 cm
12
17-6002-43
Immobiline DryStrip pH 3–10, 24 cm
12
17-6002-44
Immobiline DryStrip pH 3–10 NL, 24 cm*
12
17-6002-45
Immobiline DryStrip pH 4–7, 24 cm
12
17-6002-46
Immobiline DryStrip pH 4–7, 18 cm
12
17-1233-01
Immobiline DryStrip pH 6–9, 18 cm
12
17-6001-88
Immobiline DryStrip pH 6–11, 18 cm
12
17-6001-97
Immobiline DryStrip pH 3–10 NL, 18 cm*
12
17-1235-01
Immobiline DryStrip pH 3–10, 18 cm
12
17-1234-01
Immobiline DryStrip pH 4–7, 13 cm
12
17-6001-13
Immobiline DryStrip pH 6–11, 13 cm
12
17-6001-96
Immobiline DryStrip pH 3–10 NL, 13 cm*
Immobiline DryStrip pH 3–10, 13 cm
12
12
17-6001-15
17-6001-14
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
Ordering information 10
Immobiline DryStrip pH 4–7, 11 cm
12
18-1016-60
Immobiline DryStrip pH 6–11, 11 cm
12
17-6001-10
Immobiline DryStrip pH 3–10, 11 cm
12
18-1016-61
Immobiline DryStrip pH 4–7, 7 cm
12
17-6001-10
Immobiline DryStrip pH 6-11, 7 cm
12
17-6001-94
Immobiline DryStrip pH 3-10 NL, 7 cm*
12
17-6001-12
Immobiline DryStrip pH 4-7, 7 cm
12
17-6001-10
Immobiline DryStrip pH 3-10, 7 cm
12
17-6001-11
IPG Buffer
IPG Buffer pH 3.5–5.0†
IPG Buffer pH 5.5–6.7
IPG Buffer pH 4–7§
IPG Buffer pH 6–11‡
1 ml
1 ml
1 ml
1 ml
17-6002-02
17-6002-06
17-6000-86
17-6001-78
IPG Buffer pH 3–10 NL*
IPG Buffer pH 3–10
1 ml
1 ml
17-6000-88
17-6000-87
ExcelGel 2-D Homogeneus
6
17-6002-21
ExcelGel SDS, gradient 8–18
110 x 245 x 0.5 mm
6
80-1255-53
ExcelGel XL SDS, gradient 12–143
180 x 245 x 0.5 mm
17-1236-01
Second dimension
ExcelGel SDS Buffer Strips
anode and cathode
*
†
‡
§
6 each
17-1342-01
NL= increased resolution between pH 5-7
Use IPG Buffer pH 3.5-5.0 for pH 3.5-4.5 and 4.0-5.0 IPG strips
Use IPG Buffer pH 6-9 and pH 6-11 IPG strips.
Use IPG Buffer pH 4-7 for pH 3-7 IPG strips.
10.5 Molecular weight and pI markers
Product
Quantity
Code No.
MW range 14.000–94.000, 200 µg/vial
10
17-0446-01
MW range 53.000–212.000, 200 µg/vial
10
17-0615-01
MW range 67.000–670.000, 200 µg/vial
10
17-0445-01
Broad pI kit pH 3.5–9.3
17-0471-01
Low pI kit pH 2.8–6.5
High pI kit pH 5.2–10.3
17-0472-01
17-0473-01
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
69
10 Ordering information
10.6 Carrier ampholytes
Product
Quantity
Code No.
Pharmalyte
Pharmalyte pH 3–10
25 ml
17-0456-01
Pharmalyte pH 2.5–5
25 ml
17-0451-01
Pharmalyte pH 4–6.5
25 ml
17-0452-01
Pharmalyte pH 5–8
25 ml
17-0453-01
Pharmalyte pH 8–10.5
25 ml
17-0455-01
Pharmalyte pH 4.2–4.9
25 ml
17-0562-01
Pharmalyte pH 4.5–5.4
25 ml
17-0563-01
Pharmalyte pH 5–6
Pharmalyte pH 6.7–7.7
25 ml
25 ml
17-0564-01
17-0566-01
Each bottle contains a ready-to-use 0.200±0.004 M solution.
10.7 PlusOne electrophoresis chemicals
Product
Gel casting chemicals
Acrylamide IEF 40% solution
ReadySol IEF T40 C3
Acrylamide PAGE
Acrylamide PAGE 40% Solution
N,N-Methylene-bis-acrylamide
N,N-Methylene-bis-acrylamide
2% solution
Ammonium persulphate
TEMED
Use
Quantity
Storage
Code No.
IEF, PAGE
IEF
PAGE
PAGE
IEF, PAGE, Sequencing
1000 ml
1000 ml
1000 g
1000 ml
100 g
D
D
A
D
C
17-1301-01
17-1310-01
17-1302-02
17-1303-01
17-1304-02
IEF, PAGE, Sequencing
IEF, PAGE, Sequencing
IEF, PAGE, Sequencing
1000 ml
25 g
25 ml
D
C
C*
17-1306-01
17-1311-01
17-1312-01
Buffers
Tris
Glycine
PAGE, Sequencing500 g
PAGE, Sequencing500 g
A
A
17-1321-01
17-1323-01
Additives and sample treatment
Urea
Dithiothreitol
Dithiothreitol
Glycerol 87%
IEF, PAGE, Sequencing500 g
IEF, SDS-PAGE
1.0 g
IEF, SDS-PAGE5 g
IEF, PAGE, Sequencing
1000 ml
B
F
F
A
17-1319-01
17-1318-01
17-1318-02
17-1325-01
Detergents
Sodium dodecylsulphate
CHAPS IEF,
PAGE
PAGE, Sequencing
100 g
1 g
A
F
17-1313-01
17-1329-01
Stains
Silver Staining Kit, Protein
Silver Staining Kit, DNA
Bromophenol Blue IEF,
Protein detection
Nucleic and detection
PAGE, Sequencing
For 10–20 gels
For 10–20 gels
10 g
D
D
A
17-1150-01
17-6000-30
17-1329-01
Glass plate treatment
Repel-Silane ES
Bind-Silane
IEF, PAGE, Sequencing500 ml
IEF, PAGE, Sequencing 25 ml
C
C
17-1332-01
17-1330-01
Others
DryStrip Cover Fluid 2-D Immobiline
DryStrip
G
17-1335-01
1000 ml
Storage: A, room temp. B, dry at room temp. C, dry & dark at room temp. D, dark at 4 °C to 8 °C. E, dry & dark at 4 °C to 8 °C. F, dry at 4 to 8 °C. G, dark at room temp.
*Store well sealed.
1. Add 100 ml. 2. Add 500 ml.
70
Multiphor ll Electrophoresis System User Manual 18-1103-43 Edition AL
For local office contact information, visit
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All goods and services are sold subject to the terms and conditions of
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© 1994-2012 General Electric Company – All rights reserved.
First published Apr. 1994
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18-1103-43 AL 09/2012
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