NucleoSpin® 8 Tissue - MACHEREY

Genomic DNA
from tissue
User manual
NucleoSpin® 8 Tissue
NucleoSpin® 8 Tissue Core Kit
May 2014 / Rev. 07
Genomic DNA from tissue
Table of contents
1 Components 4
1.1 Kit contents
4
1.2 Reagents to be supplied by user
5
2 Product description
6
2.1 The basic principle
6
2.2 Kit specifications
6
2.3 Required hardware
7
2.4 Accessories supplied for use of the NucleoSpin® 8 Tissue Core Kit
8
2.5 Automated processing on robotic platforms
10
2.6 Elution procedures
10
3 Storage conditions and preparation of working solutions
12
4 Safety instructions
13
5Protocols
15
®
15
®
21
5.1NucleoSpin 8 Tissue – centrifuge processing
5.2NucleoSpin 8 Tissue – vacuum processing
6Appendix
28
6.1Troubleshooting
28
6.2 Ordering information
29
6.3 Product use restriction / warranty
31
MACHEREY-NAGEL – 05 / 2014, Rev. 07
3
Genomic DNA from tissue
1
Components
1.1 Kit contents
NucleoSpin® 8 Tissue
12 x 8 preps
60 x 8 preps
Cat. No.
740740
740740.5
Lysis Buffer T1
50 mL
125 mL
25 mL
125 mL
50 mL
2 x 100 mL
Wash Buffer BW
75 mL
3 x 125 mL
Elution Buffer BE2
60 mL
2 x 125 mL
Proteinase K (lyophilized)1
75 mg
5 x 75 mg
Proteinase Buffer PB
8 mL
35 mL
NucleoSpin Tissue Binding
Strips (green rings)
12
60
MN Square-well Blocks
2
10
MN Wash Plates3
1
5
1
5
Self-adhering PE Foil
5
25
User Manual
1
1
Binding Buffer BQ1
Wash Buffer B5 (Concentrate)
1
®
Rack of Tube Strips
1
2
3
4
4
For preparation of working solutions and storage conditions see section 3.
Elution Buffer BE: 5 mM Tris/HCl, pH 8.5
For use with vacuum only
Set of 1 rack, 12 strips with 8 tubes each, Cap Strips included
4
MACHEREY-NAGEL – 05 / 2014, Rev. 07
Genomic DNA from tissue
1.1 Kit contents continued
NucleoSpin® 8 Tissue Core Kit
48 x 8 preps
REF
740453.4
Lysis Buffer T1
100 mL
Binding Buffer BQ1
100 mL
Wash Buffer B5 (Concentrate)1
2 x 100 mL
Wash Buffer BW
2 x 125 mL
Elution Buffer BE2
125 mL
Proteinase K (lyophilized)1
4 x 75 mg
Proteinase Buffer PB
15 mL
NucleoSpin® Tissue Binding
Strips (green rings)
48
User manual
1
1.2 Reagents to be supplied by user
•
96–100% ethanol (for preparation of working solutions; see section 3)
For more detailed information regarding special hardware required for centrifuge or
vacuum processing, please see section 2.3.
For recommended accessories for use of the flexible NucleoSpin® 8 Tissue Core Kit
(reduced kit composition; REF 740453.4), please see section 2.4.
1
2
For preparation of working solutions and storage conditions see section 3.
Elution Buffer BE: 5 mM Tris/HCl, pH 8.5
MACHEREY-NAGEL – 05 / 2014, Rev. 07
5
Genomic DNA from tissue
2
Product description
2.1 The basic principle
The NucleoSpin® 8 Tissue kit is designed for the efficient isolation of high molecular
weight genomic DNA from tissue samples or cells. With the NucleoSpin® 8 Tissue
procedure, sample lysis is achieved by incubation of the samples in a solution
containing SDS and Proteinase K. Appropriate conditions for binding of DNA to the
silica membrane in the NucleoSpin® Tissue Binding Strips are created by addition of
large amounts of chaotropic salt and ethanol to the lysate. The binding process is
reversible and specific to nucleic acids. While DNA is kept on the silica membrane,
contaminations are removed by washing with two different wash buffers. Pure genomic
DNA is finally eluted under low ionic strength conditions in a slightly alkaline elution
buffer.
2.2 Kit specifications
6
•
NucleoSpin® 8 Tissue is designed for the rapid preparation of highly pure
genomic DNA from tissue, for example, mouse and rat tails, organ tissue, or
animal or bacterial cells. The purified DNA can be used directly as template for
PCR, blotting, or any kind of enzymatic reactions.
•
This kit provides reagents and consumables for purification of up to 40 μg
(average 20 μg) of pure genomic DNA from up to 20 mg tissue samples with
an A260 / A280 ratio between 1.8 and 1.9 and a typical concentration of 100–
200 ng/μL.
•
From up to two 0.5 cm long mouse tail tip section (age of mice: 4–6 weeks),
up to 35 μg of pure genomic DNA can be prepared (typical yields: 15–25 μg).
•
NucleoSpin® 8 Tissue can be processed by vacuum or in a centrifuge. The kit
allow easy automation on common liquid handling instruments.
•
The NucleoSpin® 8 Tissue kits allow for the purification of multiples of 8
samples. The kits are supplied with accessory plates for highest convenience.
The kits are designed for manual or automated use in a centrifuge or for use
with a vacuum manifold. The NucleoSpin® 8 Tissue Core Kit provides the
buffers, Proteinase K and NucleoSpin® Tissue Binding Strips only. Accessory
components (e.g., lysis plates, elution plates) are not provided with the core
kit but can be individually selected from a variety of suitable accessories (see
section 2.4 for further information). This allows highest flexibility for the user.
MACHEREY-NAGEL – 05 / 2014, Rev. 07
Genomic DNA from tissue
Kit specifications at a glance
NucleoSpin® 8 Tissue
Parameter
Format
Processing
Sample material
8-well strips
Manual and automated, vacuum or centrifugation
Up to 20 mg tissue, up to 106 cultured cells, bacteria
Typical yield
15–25 μg
A260/A280
1.8–1.9
Elution volume
100–200 μL
Preparation time
20 min/6 strips (excl. lysis)
Binding capacity
40 μg
2.3 Required hardware
NucleoSpin® 8 Tissue can be processed under vacuum or with centrifugation. Certain
hardware for processing is required.
Centrifugation
For processing the 8-well strips under centrifugation, the Starter Set C (see ordering
information), containing Column Holders C, NucleoSpin® Dummy Strips, MN Squarewell Blocks, and Rack of Tube Strips is required.
For centrifugation with Column Holder C (with inserted NucleoSpin® Tissue Binding
Strips) stacked on a MN Square-well Block or Rack of Tube Strips, a microtiter plate
centrifuge is required. which is able to accommodate the above mentioned sandwich
and reach accelerations of 5,600–6,000 x g is required (bucket height: 85 mm).
Regarding waste collection, suitable consumables (e.g., MN Square-well Blocks) are
necessary and they are not included in the kit. For the most convenient handling,
without the need of emptying and reusing the MN Square-well Blocks, we recommend
using six MN Square-well Blocks if two 96-well plates are processed at once (see
ordering information). Alternatively, it is possible to empty the MN Square-well Blocks
after every centrifugation step, reducing the amount of MN Square-well Blocks needed.
Vacuum processing
For processing 8-well strips under vacuum, the Starter Set A (see ordering infomation),
containing Column Holders A and NucleoSpin® Dummy Strips is required.
For automation on laboratory platforms wit standard 96-well plate manifolds, the use
of Starter Set A is also required.
MACHEREY-NAGEL – 05 / 2014, Rev. 07
7
Genomic DNA from tissue
The NucleoSpin® 8 Tissue kit can be used manually with the NucleoVac 96 Vacuum
Manifold (see ordering information).
Establish a reliable vacuum source for the NucleoVac 96 Vacuum Manifold. The
manifold may be used with a vacuum pump, house vacuum, or water aspirator. We
recommend a vacuum of -0.2 to -0.4 bar (reduction of atmospheric pressure). The
use of the NucleoVac Vacuum Regulator (see ordering information) is recommended.
Alternatively, adjust the vacuum so that during the purification the sample flows through
the column with a rate of 1–2 drops per second. Depending on the amount of sample
being used, the vacuum times may need to be increased for complete filtration.
Additionally, a suitable centrifuge for sample preparation steps may be required.
For general consumables and equipment needed, please see section 1.2.
2.4 Accessories supplied for use of the NucleoSpin® 8 Tissue
Core Kit
The NucleoSpin® 8 Tissue Core Kit provides buffers, Proteinase K, and NucleoSpin®
Tissue Binding Strips. Accessory plates (e.g., lysis plates, elution plates) are not
provided with the core kit. The reduced kit composition along with a variety of separately
available accessories, allow optimal adjustment of the kit to individual user needs. The
user can select additional consumables according to his / her requirements for highest
flexibility.
For use of NucleoSpin® 8 Tissue Core Kit, follow the standard protocols (see section
5.1 and 5.2).
Recommended accessories for use of the NucleoSpin® 8 Tissue Core Kit are
available from MACHEREY-NAGEL (see ordering information).
8
MACHEREY-NAGEL – 05 / 2014, Rev. 07
Genomic DNA from tissue
Protocol step
Suitable consumables, not
supplied with the core kits
Remarks
Lyse samples
8 x Round-well
Block with Cap
Strips
per 48 x 8 preps
If residual hair and / or bones in
the lysate must be removed by
centrifugation and transfer of
the supernatant, an additional
Round-well Block per 96 preps is
necessary.
or
8 x Rack of
Tube Strips with
Cap Strips
per 48 x 8 preps
or
8 x MN Squarewell Block
per 48 x 8 preps
Bind DNA to
the membrane
Elute DNA
8 x MN Wash
Plate
per 48 x 8 preps
MN Wash Plate minimizes the
risk of cross contamination
(vacuum processing only).
2 x MN Squarewell Block
For waste collection during
centrifugation (reusable)
4 x Rack of
Tubes Strips
with Cap Strips
per 4 x 96 preps
or
8 x Round-well
Block with Cap
Strips
per 48 x 8 preps
or
8 x Round-well
Block Low
per 48 x 8 preps
For processing under
centrifugation
MACHEREY-NAGEL – 05 / 2014, Rev. 07
9
Genomic DNA from tissue
2.5 Automated processing on robotic platforms
NucleoSpin® 8 Tissue can be used fully automated on many common laboratory
workstations. For the availability of scripts and general considerations about adapting
NucleoSpin® 8 Tissue on a certain workstation, please contact MN. Full processing
under vacuum enables complete automation without the need for centrifugation steps
for drying of the binding membrane or for elution. However, a final elution step by
centrifugation is recommended in order to achieve higher concentrated eluted DNA.
The risk of cross-contamination is reduced by optimized vacuum settings during the
elution step and by the improved shape of the outlets of the NucleoSpin® Tissue
Binding Strips.
Drying of the NucleoSpin® Tissue Binding Strips under vacuum is sufficient because
the bottom of the strips is protected by the MN Wash Plate during the washing steps.
As a result, it is recommended to integrate the MN Wash Plate into the automated
procedure to protect against these wash buffer residues. The MN Frame (see ordering
information) can be used to position the disposable MN Wash Plate inside the vacuum
chamber. This also reduces the risk of cross-contamination, as common metal adaptors
tend to get contaminated by gDNA. Thorough cleaning of the vacuum chamber is
recommended after each run to prevent gDNA-containing aerosols from forming.
Visit MN online at www.mn-net.com or contact your local MACHEREY-NAGEL
distributor for technical support regarding hardware, software, setup instructions, and
selection of the protocol. Several application notes of the NucleoSpin® 8 Tissue kit
on various liquid handling instruments can also be found at www.mn-net.com at
Bioanalysis / Literature.
2.6 Elution procedures
It is possible to adjust the elution method and the volume of the elution buffer to the
subsequent application of interest. In addition, to the standard method described in the
protocols (recovery rate about 70–90 %) there are several modifications possible. Use
elution buffer preheated at 70 °C for one of the following procedures:
10
•
High yield: Perform two elution steps with the volume indicated in the individual
protocol. About 90–100 % of bound nucleic acids can be eluted.
•
High concentration: Perform one elution step with only 60 % of the volume
indicated in the individual protocol. Concentration of DNA will be about 30 %
higher than with the standard elution procedure. Maximum yield of bound
nucleic acids is about 80 %.
•
High yield and high concentration: Apply half the volume of elution buffer
as indicated in the individual protocol, incubate for 3 min and centrifuge. Apply
a second aliquot of elution buffer, incubate and centrifuge again. Thus, about
85–100 % of bound nucleic acids are eluted in the standard elution volume at
a high concentration.
MACHEREY-NAGEL – 05 / 2014, Rev. 07
Genomic DNA from tissue
•
Convenient elution: For convenience, elution buffer of ambient temperature
may be used. This will result in a slightly lower yield (approximately 20 %)
compared to elution with heated elution buffer.
Elution may also be performed with Tris-EDTA-buffer (TE) of pH equal or higher than 8.
This will increase DNA stability during long term or multi-use storage at 4 °C (or ambient
temperature) by inhibiting omnipresent DNases. However, EDTA interferes, depending
on the final concentration, with certain downstream applications. For optimal performance of isolated DNA in downstream applications, we recommend
eluting with the supplied elution buffer and storing it, especially long term, at - 20 °C.
Several freeze-thaw cycles will not interfere with most downstream applications.
Performance of long-range PCR (e.g., > 10 kb) or the detection limit of trace amount of
DNA species, may be reduced after multiple freeze-thaw cycles or prolonged storage of
eluted DNA at 4 °C or room temperature. This is due to shearing of DNA or adsorption
to surfaces.
Due to the dead volume of the silica membrane, please note that the difference between
the dispensed elution buffer volume and the recovered elution buffer volume containing
genomic DNA is approximately 20 μL (recovered elution volume = dispensed elution
volume - 20 μL).
MACHEREY-NAGEL – 05 / 2014, Rev. 07
11
Genomic DNA from tissue
3
Storage conditions and preparation of working
solutions
Attention: Buffer BQ1 and BW contain chaotropic salts. Wear gloves and goggles!
CAUTION: Buffers BQ1 and BW contain guanidine hydrochloride which can form highly
reactive compounds when combined with bleach (sodium hypochlorite). DO NOT add
bleach or acidic solutions directly to the sample-preparation waste.
Storage conditions:
•
All components of the NucleoSpin® 8 Tissue kits should be stored at room
temperature (18–25 °C) for a maximum of 1 year. Storage at lower temperatures
may cause precipitation of salts. If a salt precipitation is observed, incubate the
bottle at 30–40 °C for some minutes and mix well until all of the precipitate is
redissolved. The performance of the kits is not affected by the salt precipitates.
Before starting any NucleoSpin® 8 Tissue protocol, prepare the following:
•
Wash Buffer B5: Add the indicated volume of ethanol (96–100 %) to Buffer
B5 Concentrate before use. Mark the label of the bottle to indicate that ethanol
was added. Store Wash Buffer B5 at room temperature (18–25 °C) for up to
one year.
•
Before first use of the kit, add the indicated volume of Proteinase Buffer PB
to lyophilized Proteinase K. Proteinase K solution is stable at - 20 °C for up to
6 months.
NucleoSpin®
8 Tissue
NucleoSpin®
8 Tissue
NucleoSpin®
8 Tissue Core Kit
12 x 8 preps
60 x 8 preps
4 x 96 preps
740740
740740.5
740453.5
Wash Buffer B5
(Concentrate)
50 mL
Add 200 mL ethanol
2 x 100 mL
Add 400 mL ethanol
to each bottle
2 x 100 mL
Add 400 mL ethanol
to each bottle
Proteinase K
(lyophilized)
75 mg
4 x 75 mg
4 x 75 mg
Add 2.6 mL
Add 2.6 mL
Add 2.6 mL
Proteinase Buffer PB Proteinase Buffer PB Proteinase Buffer PB
to each vial
to each vial
REF
12
MACHEREY-NAGEL – 05 / 2014, Rev. 07
Genomic DNA from tissue
4
Safety instructions
The following components of the NucleoSpin® 8 Tissue and NucleoSpin® 8 Tissue
Core kits contain hazardous contents.
Wear gloves and goggles and follow the safety instructions given in this section.
GHS classification
Only harmful features need not be labeled with H and P phrases until 125 mL or 125 g.
Mindergefährliche Eigenschaften müssen bis 125 mL oder 125 g nicht mit H- und P-Sätzen gekennzeichnet
werden.
Component Hazard contents
GHS symbol
Hazard Precaution
phrases phrases
Inhalt
Gefahrstoff
GHS Symbol
H-Sätze
P-Sätze
BQ1
Guanidine hydrochloride
50–66 %
Warning
Guanidinhydrochlorid 50–66 %
Achtung
302, 315,
319
280, 301+312,
302+352,
305+351+338,
330, 332+313,
337+313
Guanidine hydrochloride
36–50 % + isopropanol
20–50 %
Warning
226, 302,
319
210, 233, 280,
301+312,
305+351+338,
330, 337+313,
403+235
315, 319,
334, 335
261, 280,
302+352,
304+340,
305+351+338,
312, 332+313,
337+313,
342+311,
403+233
BW
Proteinase K
Guanidinhydrochlorid 36–50 %
+ Isopropanol 20–50 %
Achtung
Proteinase K, lyophilized
Danger
Proteinase K, lyophilisiert
Gefahr
Hazard phrases
H 226
Flammable liquid and vapour.
H 302
Harmful if swallowed.
H 315
Causes skin irritation.
H 319
Causes serious eye irritation.
H 334
May cause allergy or asthma symptoms or breathing difficulties if inhaled.
H 335
May cause respiratory irritation.
Flüssigkeit und Dampf entzündbar.
Gesundheitsschädlich bei Verschlucken.
Verursacht Hautreizungen.
Verursacht schwere Augenreizung.
Kann bei Einatmen Allergie, asthmaartige Symptome oder Atembeschwerden verursachen.
Kann die Atemwege reizen.
MACHEREY-NAGEL – 05 / 2014, Rev. 07
13
Genomic DNA from tissue
Precaution phrases
P 210
Keep away from heat, hot surfaces, sparks, open flames and other ignition
sources. No smoking.
Von Hitze, heißen Oberflächen, Funken, offenen Flammen sowie anderen
Zündquellenarten fernhalten. Nicht rauchen.
P 233
Keep container tightly closed.
P 261
Avoid breathing dust.
P 280
Wear protective gloves / eye protection.
P 301+312
IF SWALLOWED: Call a POISON CENTER/ doctor/…/if you feel unwell.
P 302+352
IF ON SKIN: Wash with plenty of water/…
P 304+340
IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
Behälter dicht verschlossen halten.
Einatmen von Staub vermeiden.
Schutzhandschuhe / Augenschutz tragen.
BEI VERSCHLUCKEN: Bei Unwohlsein GIFTINFORMATIONSZENTRUM / Arzt /…
anrufen.
BEI KONTAKT MIT DER HAUT: Mit viel Wasser/… waschen.
BEI EINATMEN: An die frische Luft bringen und in einer Position ruhigstellen, die das
Atmen erleichtert.
P 305+351+338 IF IN EYES: Rinse continuously with water for several minutes. Remove
contact lenses if present and easy to do – continue rinsing.
BEI KONTAKT MIT DEN AUGEN: Einige Minuten lang behutsam mit Wasser spülen.
Vorhandene Kontaktlinsen nach Möglichkeit entfernen. Weiter spülen.
P 312
Call a POISON CENTER/ doctor/…/if you feel unwell.
P 330
Rinse mouth.
P 332+313
If skin irritation occurs: Get medical advice / attention.
P 337+313
Get medical advice / attention.
P 342+311
If experiencing respiratory symptoms: Call a POISON CENTER/ doctor/…
P 403+233
Store in a well ventilated place. Keep container tightly closed.
P 403+235
Store in a well ventilated place. Keep cool.
Bei Unwohlsein GIFTINFORMATIONSZENTRUM / Arzt /… anrufen.
Mund ausspülen.
Bei Hautreizung: Ärztlichen Rat einholen / ärztliche Hilfe hinzuziehen.
Bei anhaltender Augenreizung: Ärztlichen Rat einholen / ärztliche Hilfe hinzuziehen.
Bei Symptomen der Atemwege: GIFTINFORMATIONSZENTRUM /Arzt/… anrufen.
Behälter dicht geschlossen an einem gut belüfteten Ort aufbewahren.
Kühl an einem gut belüfteten Ort aufbewahren.
For further information please see Material Safety Data Sheets (www.mn-net.com).
Weiterführende Informationen finden Sie in den Sicherheitsdatenblättern (www.mn-net.com).
14
MACHEREY-NAGEL – 05 / 2014, Rev. 07
NucleoSpin® 8 Tissue – centrifuge processing
5
Protocols
5.1 NucleoSpin® 8 Tissue – centrifuge processing
•
For hardware requirements, refer to section 2.3.
•
For use of the NucleoSpin® 8 Tissue Core Kit (REF 740453.5), refer to section
2.4 regarding recommended accessories.
•
For detailed information on each step, see page 20.
Before starting the preparation:
•
•
•
Check if Buffer B5 and Proteinase K were prepared according to section 3.
Set incubator or oven to 56 °C.
Preheat Elution Buffer BE to 70 °C.
Protocol-at-a-glance
1
Prepare samples
2
Lyse samples
2 x 0.5 cm mouse tail
or
up to 20 mg tissue,
106 cultured cells, or bacteria
180 μL T1
25 μL Proteinase K
Mix
56 °C, ≥ 6 h
3
Adjust DNA binding conditions
200 μL BQ1
200 μL ethanol (96–100 %)
Mix
4
Transfer lysates to NucleoSpin®
Tissue Binding Strips
5
Bind DNA to silica membrane of the
NucleoSpin® Tissue Binding Strips
5,600 x g,
10 min
MACHEREY-NAGEL – 05 / 2014, Rev. 07
15
NucleoSpin® 8 Tissue – centrifuge processing
6
Wash silica membrane
500 μL BW
5,600 x g,
2 min
700 μL B5
5,600 x g,
4 min
7
Dry silica membrane
8
Elute DNA
70°C, 10 min
100 μL BE (70 °C)
5,600 x g,
2 min
Optional: Repeat elution step once.
16
MACHEREY-NAGEL – 05 / 2014, Rev. 07
NucleoSpin® 8 Tissue – centrifuge processing
Detailed protocol
•
For processing under centrifugation, the Starter Kit C and a suitable centrifuge
are required (see section 2.3). For handling of the 8-well strips and the column
holders ,refer to the protocol of the Starter Kit C.
•
The use of NucleoSpin® Tissue Binding Strips in a Column Holder C allows the
isolation of up to n x 8 samples (n = 1 to 6). Insert as many of the NucleoSpin®
Tissue Binding Strips as required into the same positions of each one of the
two reusable column holders and place column holders onto the MN Squarewell Blocks. Label the column holders or 8-well strips for later identification.
Always use 2 Column Holders C containing identical numbers of NucleoSpin®
Tissue Binding Strips for centrifugation. This avoids the need to balance the
centrifuge, and allows multiples of 16 samples to be processed in parallel. We
recommend inserting the NucleoSpin® Tissue Binding Strips around the center
of the column holder
•
For use of the NucleoSpin® 8 Tissue Core Kit (REF 740453.5), refer to section
2.4 regarding recommended accessories.
Before starting the preparation:
•
•
•
1
Check if Buffer B5 and Proteinase K were prepared according to section 3.
Set incubator or oven to 56 °C.
Preheat Elution Buffer BE to 70 °C.
Prepare samples
For each preparation, cut up to two 0.5 cm pieces (20 mg) of mouse tail into
appropriate lysis tubes or plates. If preparing DNA from rat tails, one 0.5 cm
piece is sufficient. Tissue samples should not exceed 20 mg, cultured cells and
bacteria should not exceed 106 cells.
2
Lyse samples
Prepare a Proteinase K working solution: For each sample, mix 25 μL
Proteinase K with 180 μL Buffer T1 and vortex. Transfer 200 μL of the
resulting solution to each lysis tube containing the samples. Close the individual
tubes and mix by vogorous shaking for 10–15 s. Spin briefly (15 s; 1,500 x g) to
collect any sample at the bottom of the wells.
The samples must be submerged in the solution. Never prepare the Proteinase K
working solution more than 15 min before addition to the samples. Proteinase K
tends to self digestion when incubated in Buffer T1 without substrate.
MACHEREY-NAGEL – 05 / 2014, Rev. 07
17
NucleoSpin® 8 Tissue – centrifuge processing
Incubate the tubes / plate containing the samples at 56 °C for at least 6 h (for
mammalian cells reduce incubation to 10 min, bacterial cells may require prelysis with, e.g., lysozyme) or overnight until the samples are completely lysed.
For optimal lysis, mix occasionally during incubation. Make sure that the lysis
tubes / plates are securely closed. When using Rack of Tube Strips, place a
weight on top in order to prevent the Cap Strips from popping off occasionally.
After lysis, set the incubator to 70 °C for the membrane drying step.
Centrifuge the tubes / plate (15 s; 1,500 x g) to collect any condensate from the
lid of tubes / plate.
Residual hair and / or bones in the lysate can be removed by centrifugation (2 min;
5,600–6,000 x g) and transfer of the supernatant to new microtubes or to a new
Rack of Tube Strips (not supplied with the kit).
3
Adjust DNA binding conditions
Add 200 μL Buffer BQ1 and 200 μL 96–100 % ethanol to each sample. Again,
take care not to moisten the rims of the individual wells while dispensing the
buffer. Close the tubes / plate. Mix by vigorous shaking for 10–15 s. Spin briefly
(10 s; 1,500 x g) to collect any sample from the lid.
Ethanol and Buffer BQ1 can be premixed before addition to the samples, if the
mixture is to be used during the next 3 months. Never centrifuge at higher g-forces or
for longer periods as DNA will precipitate.
Insert desired number of NucleoSpin® Tissue Binding Strips in the Column
Holder C and place it on an MN Square-well Block for collection of flow-through.
If using more than one plate, label the plates for later identification.
4
Transfer lysates
Transfer the lysates resulting from step 2 carefully into the wells of the
NucleoSpin® Tissue Binding Strips. When using the Rack of Tube Strips for
lysis, remove the first Cap Strip and transfer lysates before removing the next
Cap Strip. Do not moisten the rims of the individual wells while dispensing the
samples – moistened rims may cause cross contamination during centrifugation.
After transfer seal the openings of the inserted NucleoSpin® Tissue Binding
Strips with Self-adhering PE Foil.
18
MACHEREY-NAGEL – 05 / 2014, Rev. 07
NucleoSpin® 8 Tissue – centrifuge processing
5
Bind DNA to silica membrane
Place the MN Square-well Block with Column Holder C onto the centrifuge
carriers and insert them into the rotor buckets. Centrifuge at 5,600–6,000 x g
for 10 min.
Typically, the lysates will have passed through the silica membrane within a few
minutes. The centrifugation process can be extended to 20 min, if the lysates have
not passed completely.
6
Wash silica membrane
1st wash
Remove the Self-adhering PE Foil and add 500 μL Buffer BW to each well of
the NucleoSpin® Tissue Binding Strips. Seal strips with a new Self-adhering PE
Foil and centrifuge again at 5,600–6,000 x g for 2 min.
2nd wash
Remove the Self-adhering PE Foil and add 700 μL Buffer B5 to each well of
the NucleoSpin® Tissue Binding Strips. Seal strips with a new Self-adhering PE
Foil and centrifuge again at 5,600–6,000 x g for 4 min.
During this step, as much ethanolic Buffer B5 as possible is removed by centrifugation.
7
Dry silica membrane
Remove the Self-adhering PE Foil and place the Column Holder C holding the
NucleoSpin® Tissue Binding Strips on an opened Rack of Tube Strips. Place it
in an incubator for 10 min at 70 °C to evaporate residual ethanol.
Removal of ethanol by evaporation at 70 °C is more effective than prolonged
centrifugation.
Note: The ethanol in Buffer B5 may inhibit enzymatic reactions and should be
removed completely before eluting DNA.
MACHEREY-NAGEL – 05 / 2014, Rev. 07
19
NucleoSpin® 8 Tissue – centrifuge processing
8
Elute DNA
Dispense 100 μL preheated Buffer BE (70 °C) to each well of the NucleoSpin®
Tissue Binding Strips. Dispense the buffer directly onto the membrane. Incubate
at room temperature for 1 min. Centrifuge at 5,600–6,000 x g for 2 min. Repeat
elution step once. Remove Column Holder C with inserted NucleoSpin® Tissue
Binding Strips from the Rack of Tube Strips. For alternative elution procedures
see section 2.3.
If elution in small volume tubes is desired, place a 96 PCR plate (not supplied) on top
of a Round-well Block or a Rack of Tube Strips and elute into the PCR plate.
20
MACHEREY-NAGEL – 05 / 2014, Rev. 07
NucleoSpin® 8 Tissue – vacuum processing
5.2 NucleoSpin® 8 Tissue – vacuum processing
•
For hardware requirements, refer to section 2.3.
•
For detailed information on each step, see page 25.
•
•
For detailed information regarding the vacuum manifold setup, see page 24.
For use of the NucleoSpin® 96 Tissue Core Kit (REF 740454.4), refer to section
2.4 regarding recommended accessories.
Before starting the preparation:
•
•
•
Check if Buffer B5 and Proteinase K were prepared according to section 3.
Set incubator or oven to 56 °C.
Preheat Elution Buffer BE to 70 °C.
Protocol-at-a-glance
1
Prepare samples
2
Lyse samples
2 x 0.5 cm mouse tail
or
up to 20 mg tissue,
106 cultured cells, or bacteria
180 μL T1
25 μL Proteinase K
Mix
56 °C, ≥ 6 h
3
Adjust DNA binding conditions
200 μL BQ1
200 μL ethanol (96–100 %)
Mix
Prepare the NucleoVac 96
Vacuum Manifold
4
Transfer lysates to NucleoSpin®
Tissue Binding Strips
5
Bind DNA to silica membrane of the
NucleoSpin® Tissue Binding Strips
- 0.2 bar*,
5 min
* Reduction of atmospheric pressure
MACHEREY-NAGEL – 05 / 2014, Rev. 07
21
NucleoSpin® 8 Tissue – vacuum processing
6
Wash silica membrane
600 μL BW
900 μL B5
900 μL B5
- 0.2 bar*,
5 min each step
Remove MN Wash Plate
7
Dry silica membrane
8
Elute DNA
- 0.6 bar*,
10 min
100 μL BE (70 °C)
- 0.4 bar*,
2 min
Optional: Repeat elution step once
* Reduction of atmospheric pressure
22
MACHEREY-NAGEL – 05 / 2014, Rev. 07
NucleoSpin® 8 Tissue – vacuum processing
Setup of vacuum manifold:
Binding / Washing steps
Elution step
Step 4:
Place the NucleoSpin®
Binding Strips inserted
the Column Holder A on
top of the manifold lid.
Unused rows have to be
filled with NucleoSpin®
Dummy Strips.
Step 4:
Place the NucleoSpin®
Binding Strips inserted
the Column Holder A on
top of the manifold lid.
Unused rows have to be
filled with NucleoSpin®
Dummy Strips.
Step 3:
Place the manifold lid on
top of the manifold base.
Step 3:
Place the manifold lid on
top of the manifold base.
Step 2:
Place the MN Wash Plate
in the manifold.
Step 2:
Place the Rack of Tube
Strips in the manifold.
MICR
OT
Step 1:
Insert spacers
‘MTP/MULTI-96 PLATE‘
and waste container in
the manifold base.
MICR
OT
UB
UB
E RA
E RA
CK
Final setup
CK
Step 1:
Insert spacers
‘MICROTUBE RACK‘
in the manifold base.
Final setup
MICR
OT
MICR
OT
UB
UB
E RA
CK
E RA
CK
MACHEREY-NAGEL – 05 / 2014, Rev. 07
23
NucleoSpin® 8 Tissue – vacuum processing
Detailed protocol
•
For hardware requirements, refer to section 2.3.
The use of NucleoSpin® Tissue Binding Strips in a Column Holder A allows
the isolation of up to n x 8 samples (n = 1 to 6). Insert as many NucleoSpin®
Tissue Binding Strips as required into the reusable column holder. Seal unused
wells of NucleoSpin® Tissue Binding Strips with Self-adhering PE-Foil and close
unused wells with Dummy Strips. Place the Column Holder on the NucleoVac
96 manifold.
•
•
For processing of NucleoSpin® 8 Tissue under vacuum, the NucleoVac 96
Vacuum Manifold and the Starter Kit A are required (see ordering information).
Starter Kit A contains the Column Holders A and NucleoSpin® Dummy Strips to
seal unused rows.
For detailed information on each step, see page 25.
For use of the NucleoSpin® 8 Tissue Core Kit (REF 740453.4), refer to section
2.4 regarding recommended accessories.
Before starting the preparation:
•
•
•
1
Check if Buffer B5 and Proteinase K were prepared according to section 3.
Set incubator or oven to 56 °C.
Preheat Elution Buffer BE to 70 °C.
Prepare samples
For each preparation, cut up to two 0.5 cm pieces (20 mg) of mouse tail into
appropriate lysis tubes or plates. If preparing DNA from rat tails, one 0.5 cm
piece is sufficient. Tissue samples should not exceed 20 mg, cultured cells and
bacteria should not exceed 106 cells.
2
Lyse samples
Prepare a Proteinase K working solution: For each sample, mix 25 μL
Proteinase K with 180 μL Buffer T1 and vortex. Transfer 200 μL of the
resulting solution to each lysis tube containing the samples. Close the individual
tubes and mix by vigorous shaking for 10–15 s. Spin briefly (15 s; 1,500 x g) to
collect any sample at the bottom of the wells.
The samples must be submerged in the solution. Never prepare the Proteinase K
working solution more than 15 min before addition to the samples. Proteinase K
tends to self digestion when incubated in Buffer T1 without substrate.
24
MACHEREY-NAGEL – 05 / 2014, Rev. 07
NucleoSpin® 8 Tissue – vacuum processing
Incubate the tubes / plate containing the samples at 56 °C for at least 6 h (for
mammalian cells reduce incubation to 10 min, bacterial cells may require prelysis with, e.g., lysozyme) or overnight until the samples are completely lysed.
For optimal lysis, mix occasionally during incubation. Make sure that the lysis
tubes / plate are securely closed. When using Rack of Tube Strips place a
weight on top in order to prevent the Cap Strips from popping off occasionally.
Centrifuge the tubes / plate (15 s; 1,500 x g) to collect any condensate from the
lid of the tube / plate.
Residual hair and / or bones in the lysate can be removed by centrifugation (2 min;
5,600 –6,000 x g) and transfer of the supernatant to new microtubes or a new Rack
of Tube Strips (not supplied with the kit).
3
Adjust DNA binding conditions
Add 200 μL Buffer BQ1 and 200 μL 96–100 % ethanol to each sample. Again,
take care not to moisten the rims of the individual wells while dispensing the
buffer. Close the tubes / plate. Mix by vigorous shaking for 10–15 s. Spin briefly
(10 s; 1,500 x g) to collect any sample from the lid.
Ethanol and Buffer BQ1 can be premixed before addition to the samples, if the
mixture is to be used up during the next 3 months. Never centrifuge at higher g-forces
or for longer periods as DNA will precipitate.
Prepare the NucleoVac 96 Vacuum Manifold:
Place waste tray into vacuum manifold base. Insert spacers labeled
‘MTP / MULTI-96 PLATE’ notched side up and place the MN Wash Plate on
them. Close the manifold with the manifold lid.
Insert desired number of NucleoSpin® Tissue Binding Strips in the Column
Holder A. Use NucleoSpin® Dummy Strips to seal unused positions in the
column holder.
Place Column Holder A with inserted NucleoSpin® Tissue Binding Strips on top
of the manifold.
4
Transfer lysates
Transfer the lysates resulting from step 2 carefully into the wells of the
NucleoSpin® Tissue Binding Strips. When using the Rack of Tube Strips remove
the first Cap Strip and transfer lysates before removing the next Cap Strip. Do
not moisten the rims of the individual wells while dispensing the samples –
moistened rims may cause cross contamination.
MACHEREY-NAGEL – 05 / 2014, Rev. 07
25
NucleoSpin® 8 Tissue – vacuum processing
5
Bind DNA to silica membrane
Apply vacuum until all lysates have passed through the wells of the NucleoSpin®
Tissue Binding Strips (- 0.2 bar*; 5 min). Release the vacuum.
6
Wash silica membrane*
1st wash
Add 600 μL* Buffer BW to each well of the NucleoSpin® Tissue Binding Strips.
Apply vacuum (- 0.2 bar**; 5 min) until all buffer has passed through the wells
of the NucleoSpin® Tissue Binding Strips. Release the vacuum.
2nd wash
Add 900 μL* Buffer B5 to each well of the NucleoSpin® Tissue Binding Strips.
Apply vacuum (- 0.2 bar**; 5 min) until all buffer has passed through the wells
of the NucleoSpin® Tissue Binding Strips. Release the vacuum.
3rd wash
Add 900 μL* Buffer B5 to each well of the NucleoSpin® Tissue Binding Strips.
Apply vacuum (- 0.2 bar**; 5 min) until all buffer has passed through the wells
of the NucleoSpin® Tissue Binding Strips. Release the vacuum.
Remove MN Wash Plate
After the final washing step close the valve, release the vacuum and remove
the Column Holder A with inserted NucleoSpin® Tissue Binding Strips from
the vacuum manifold. Put it on a clean paper towel to remove residual
EtOH-containing wash buffer. Remove manifold lid, MN Wash Plate, and waste
container from the vacuum manifold.
7
Dry silica membrane
Insert Column Holder A with the NucleoSpin® Tissue Binding Strips again into
the lid and close the manifold. Apply maximum vacuum (at least - 0.6 bar**) for
10 min to dry the membrane completely. This step is necessary to eliminate
traces of ethanol.
Note: The ethanol in Buffer B5 inhibits enzymatic reactions and has to be removed
completely before eluting DNA.
Finally, release the vacuum.
* Buffer volumes are increased compared to processing under centrifugation to improve washing efficiency under
vacuum.
** Reduction of atmospheric pressure
26
MACHEREY-NAGEL – 05 / 2014, Rev. 07
NucleoSpin® 8 Tissue – vacuum processing
8
Elute DNA
Insert spacers ‘MICROTUBE RACK’ into the NucleoVac 96 Vacuum Manifold‘s
short sides. Place a Rack of Tube Strips onto the spacer. Close the vacuum
manifold and place the Column Holder A with the NucleoSpin® Tissue Binding
Strips on top. Dispense 100 μL preheated (70 °C) Buffer BE directly to the
bottom of each well. Incubate for 3 min at room temperature. Apply vacuum for
elution (- 0.4 bar*; 2 min). Release vacuum and repeat elution step once. For
alternative elution procedures see section 2.3.
Finally, close Tube Strips with Cap Strips for storage.
Centrifuge the Rack of Tube Strips shortly to collect all sample at the bottom of
the Tube Strips.
* Reduction of atmospheric pressure
MACHEREY-NAGEL – 05 / 2014, Rev. 07
27
Genomic DNA from tissue
6
Appendix
6.1 Troubleshooting
Problem
Possible cause and suggestions
Incomplete lysis
No or poor DNA
yield
•
Sample has not completely been submerged during
heat incubation. Cut samples into small pieces. Mix
well. Be sure that the samples are fully submerged
in Buffer T1 / Proteinase K mixture. Incubate until the
samples are completely lysed.
•
Buffer T1 and Proteinase K have been premixed more
than 15 min before addition to the substrate. Proteinase K
tends to self digestion under optimal reaction conditions in
Buffer T1 without substrate.
Reagents not applied properly
•
Prepare Buffer B5 and Proteinase K solution according to
instructions (see section 3). Add Buffer BQ1 and ethanol
to the lysates before loading them to the wells of the
NucleoSpin® Tissue Binding Strips.
Suboptimal elution of DNA from the column
•
Preheat Buffer BE to 70 °C before elution. Apply Buffer BE
directly onto the center of the silica membrane.
•
Elution efficiencies decrease dramatically if elution is done
with buffers with pH < 7. Use slightly alkaline elution buffer
like Buffer BE (pH 8.5).
RNA in sample
RNA
contamination
•
If DNA free of RNA is desired, cool down to room
temperature after lysis incubation and add 20 μL of an
RNase A solution (20 mg / mL; see ordering information).
Incubate for 15 min with moderate shaking.
Carry-over of ethanol
Poor performance
of genomic DNA
in enzymatic
reactions
28
•
After washing with Buffer B5, centrifuge ≥ 4 min at
5,600–6,000 x g in order to remove ethanolic Buffer B5
completely and evaporate residual ethanol by incubating
the NucleoSpin® Tissue Binding Strips at 70 °C for 10 min.
•
Increase vacuum drying time to 15 min.
MACHEREY-NAGEL – 05 / 2014, Rev. 07
Genomic DNA from tissue
Problem
Possible cause and suggestions
Poor performance
of genomic DNA
in enzymatic
reactions
(continued)
Contamination of DNA with inhibitory substances
•
Do not elute DNA with TE buffer. EDTA may inhibit
enzymatic reactions. Repurify DNA and elute in Buffer BE.
Too much starting material
•
Repeat the procedure, using two mouse tail sections of
maximally 4–6 mm length. If processing rat tails, one
0.5 cm long tail tip section is sufficient.
Hair or bones left in the lysate after step 2
•
Clogged wells
Centrifuge the Round-well Block for 3 min at 5,600–
6,000 x g. Transfer lysates to a new Round-well Block
without disturbing the debris pellet.
Incomplete passage of lysate in step 4
•
If no more than 300–500 μL of lysate is remaining in the
columns, continue with step 5. Through the addition of
Buffer BW the sample is diluted and thus the sample will
pass the column more easily.
6.2 Ordering information
Product
REF
Pack of
NucleoSpin 8 Tissue
740740
740740.5
12 x 8 preps
60 x 8 preps
NucleoSpin® 8 Tissue Core Kit
740453.4
48 x 8 preps
NucleoSpin® 96 Tissue
740741.2
740741.4
740741.24
2 x 96 preps
4 x 96 preps
24 x 96 preps
NucleoSpin® 96 Tissue Core Kit
740454.4
4 x 96 preps
Buffer T1
740940.25
25 mL
Buffer BQ1
740923.1
1L
Buffer B5 Concentrate
740921.100
®
(for 500 mL Buffer B5)
MACHEREY-NAGEL – 05 / 2014, Rev. 07
100 mL
29
Genomic DNA from tissue
Product
REF
Pack of
Buffer BW
740922.500
500 mL
Proteinase K
740506
100 mg
RNase A (lyophilized)
740505
100 mg
MN Square-well Block
740476
740476 .24
4
24
Rack of Tube Strips
740477
740477.24
4 sets
24 sets
Round-well Block
740475
740475.24
4 sets
24 sets
Round-well Block Low
740487
740487.24
4 sets
24 sets
MN Wash Plate
740479
740479.24
4
24
Cap Strips
740478
740478.24
48
288
Starter Set A
740682
1
Starter Set C
740684
1
MN Frame
740680
1
NucleoVac 96 Vacuum Manifold
740681
1
NucleoVac Vacuum Regulator
740641
1
Self-adhering PE Foil
740676
50
(1 set consists of 1 rack,
12 strips with 8 tubes each, and
12 Cap Strips)
(1 set consists of 1 Round-well
Block and 12 Cap Strips)
(1 set consists of 1 Round-well
Block Low and Self-adhering PE
Foil)
(for processing NucleoSpin® 8-well
strips on NucleoVac 96 Vacuum
Manifold)
(for processing NucleoSpin® 8-well
strips under centrifugation)
Visit www.mn-net.com for more detailed product information.
30
MACHEREY-NAGEL – 05 / 2014, Rev. 07
Genomic DNA from tissue
6.3 Product use restriction / warranty
NucleoSpin® 8 Tissue (Core Kit) components are intended, developed, designed,
and sold FOR RESEARCH PURPOSES ONLY, except, however, any other function of
the product being expressly described in original MACHEREY-NAGEL product leaflets.
MACHEREY-NAGEL products are intended for GENERAL LABORATORY USE
ONLY! MACHEREY-NAGEL products are suited for QUALIFIED PERSONNEL ONLY!
MACHEREY-NAGEL products shall in any event only be used wearing adequate
PROTECTIVE CLOTHING. For detailed information please refer to the respective
Material Safety Data Sheet of the product! MACHEREY-NAGEL products shall
exclusively be used in an ADEQUATE TEST ENVIRONMENT. MACHEREY-NAGEL
does not assume any responsibility for damages due to improper application of our
products in other fields of application. Application on the human body is STRICTLY
FORBIDDEN. The respective user is liable for any and all damages resulting from such
application.
DNA/RNA/PROTEIN purification products of MACHEREY-NAGEL are suitable for INVITRO-USES ONLY!
ONLY MACHEREY-NAGEL products specially labeled as IVD are also suitable for INVITRO-diagnostic use. Please pay attention to the package of the product. IN-VITROdiagnostic products are expressly marked as IVD on the packaging.
IF THERE IS NO IVD SIGN, THE PRODUCT SHALL NOT BE SUITABLE FOR INVITRO-DIAGNOSTIC USE!
ALL OTHER PRODUCTS NOT LABELED AS IVD ARE NOT SUITED FOR ANY
CLINICAL USE (INCLUDING, BUT NOT LIMITED TO DIAGNOSTIC, THERAPEUTIC
AND/OR PROGNOSTIC USE).
No claim or representations is intended for its use to identify any specific organism
or for clinical use (included, but not limited to diagnostic, prognostic, therapeutic, or
blood banking). It is rather in the responsibility of the user or - in any case of resale of
the products - in the responsibility of the reseller to inspect and assure the use of the
DNA/RNA/protein purification products of MACHEREY-NAGEL for a well-defined and
specific application.
MACHEREY-NAGEL shall only be responsible for the product specifications and the
performance range of MN products according to the specifications of in-house quality
control, product documentation and marketing material.
This MACHEREY-NAGEL product is shipped with documentation stating specifications
and other technical information. MACHEREY-NAGEL warrants to meet the stated
specifications. MACHEREY-NAGEL´s sole obligation and the customer´s sole remedy
is limited to replacement of products free of charge in the event products fail to perform
as warranted. Supplementary reference is made to the general business terms and
conditions of MACHEREY-NAGEL, which are printed on the price list. Please contact
us if you wish to get an extra copy.
There is no warranty for and MACHEREY-NAGEL is not liable for damages or defects
arising in shipping and handling (transport insurance for customers excluded), or
out of accident or improper or abnormal use of this product; defects in products or
MACHEREY-NAGEL – 05 / 2014, Rev. 07
31
Genomic DNA from tissue
components not manufactured by MACHEREY-NAGEL, or damages resulting from
such non-MACHEREY-NAGEL components or products.
MACHEREY-NAGEL makes no other warranty of any kind whatsoever, and
SPECIFICALLY DISCLAIMS AND EXCLUDES ALL OTHER WARRANTIES OF
ANY KIND OR NATURE WHATSOEVER, DIRECTLY OR INDIRECTLY, EXPRESS
OR IMPLIED, INCLUDING, WITHOUT LIMITATION, AS TO THE SUITABILITY,
REPRODUCTIVITY, DURABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
USE, MERCHANTABILITY, CONDITION, OR ANY OTHER MATTER WITH RESPECT
TO MACHEREY-NAGEL PRODUCTS.
In no event shall MACHEREY-NAGEL be liable for claims for any other damages,
whether direct, indirect, incidental, compensatory, foreseeable, consequential, or
special (including but not limited to loss of use, revenue or profit), whether based upon
warranty, contract, tort (including negligence) or strict liability arising in connection with
the sale or the failure of MACHEREY-NAGEL products to perform in accordance with
the stated specifications. This warranty is exclusive and MACHEREY-NAGEL makes
no other warranty expressed or implied.
The warranty provided herein and the data, specifications and descriptions of this
MACHEREY-NAGEL product appearing in MACHEREY-NAGEL published catalogues
and product literature are MACHEREY-NAGEL´s sole representations concerning
the product and warranty. No other statements or representations, written or oral, by
MACHEREY-NAGEL´s employees, agent or representatives, except written statements
signed by a duly authorized officer of MACHEREY-NAGEL are authorized; they should
not be relied upon by the customer and are not a part of the contract of sale or of this
warranty.
Product claims are subject to change. Therefore please contact our Technical Service
Team for the most up-to-date information on MACHEREY-NAGEL products. You
may also contact your local distributor for general scientific information. Applications
mentioned in MACHEREY-NAGEL literature are provided for informational purposes
only. MACHEREY-NAGEL does not warrant that all applications have been tested in
MACHEREY-NAGEL laboratories using MACHEREY-NAGEL products. MACHEREYNAGEL does not warrant the correctness of any of those applications.
Last updated: 07 / 2010, Rev. 03
Please contact:
MACHEREY-NAGEL GmbH & Co. KG
Tel.: +49 (0) 24 21 969 270
e-mail: tech-bio@mn-net.com
Trademarks:
NucleoSpin is a registered trademark of MACHEREY-NAGEL GmbH & Co. KG
All used names and denotations can be brands, trademarks, or registered labels of their respective owner – also if
they are not special denotation. To mention products and brands is only a kind of information (i.e., it does not offend
against trademarks and brands and can not be seen as a kind of recommendation or assessment). Regarding
these products or services we can not grant any guarantees regarding selection, efficiency, or operation.
32
MACHEREY-NAGEL – 05 / 2014, Rev. 07