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Microbalances | Semi-Microbalances | Analytical Balances
MICROBALANCES
The Ion Series –
The Practical Solution for
Weighing Micrograms.
Removable
Separation Plate
Enables weighing of taller
objects in all models.
Weighing is at the heart of many laboratory
processes and the Ion Series offers the features,
performance and standard accessories to bring
real convenience to your lab. With the six
balances of the Ion Series, you can choose a
capacity as high as 520 g or a microbalance with
readability down to 1 µg. The BM-20 and BM-22
let you handle with confidence even trace
quantities of valuable or degradable substances.
Critical to precision weighing is static control,
which is why the direct current fanless ionizer is
standard on all models.
The automatic response adjustment function
uses environmental data from built-in sensors
to compensate the balance’s characteristics
to deliver fast and stable results. Calibration is
also automatic and always available with a single
key press. A range of accessories add extra
convenience.
Large Weighing Chamber
Improves Usability
The Ion Series offers more space
and convenience than conventional
1µg balances that use a secondary
breeze break.
Innovative Draft Shields
Microgram (µg) Measurements Made Simpler.
The BM-20 and BM-22 microbalances have the
performance and standard accessories to simplify
microgram measurements. The Ion Series now
makes microgram ( µg ) measurements accessible
to all researchers and offers a real choice in
microbalances.
Ion Model
BM-20
BM-22 (Smart Range)
BM-252
BM-200
BM-300
BM-500
Capacity
22 g
5.1 g
22 g
250 g
220 g
320 g
520 g
Resolution
0.001 mg (1 µg)
0.001 mg (1 µg)
0.01 mg (10 µg)
0.01 mg (10 µg)
0.1 mg
0.1 mg
0.1 mg
The BM-20 and BM-22 have a
novel double-ring structure
around the weighing pan,
making an inner breeze
break unnecessary.
Bright LCD
The high-contrast, backlit LCD
provides excellent readability.
Automatic Response Function
The balance adjusts its response time
(FAST, MED, SLOW) by analyzing
the effects of drafts and vibrations
on measurement stability.
SEMI-MICROBALANCES
Built-in Fanless Ionizer
The internal ionizer neutralizes charged samples
and is standard on all BM models.
Anti-static Glass
Breeze Break
Clear metal coating on
glass minimizes the
effects of static.
Press the ION key to
neutralize static. The
green LED is lit while
the ionizer is on.
10,000 Hour
Lifetime
The electrode discharge
pins are also safely
replaceable by the user.
The “door” symbol
is displayed until
both doors are
completely closed.
Automatic
Self Calibration
Twelve Units
of Weighing
Built-in Sensors Monitor
the Environment:
The balance can selfcalibrate automatically
when it detects a charge
in ambient temperature.
g, mg, oz, ozt, ct, dwt, grain,
momme, tael, tola, messghal,
pieces (counting mode) and
% (percent mode).
•
•
•
•
Temperature
Humidity
Vibration
Atmospheric Pressure
ANALYTICAL BALANCES
Eliminate One of the Major Frustrations in
Precision Weighing.
The Challenge.
Static, while often overlooked, can seriously
degrade precision weighing. An electrostatically
charged object induces the opposite charge in nearby
objects. The resulting attraction causes inaccuracies
as shown below.
Filter papers, disposable weigh boats and plastic
centrifuge containers can all become charged just
from normal handling. And charged powders can be
displaced, causing cross-contamination.
The A&D Solution
Error when weighing
a charged object
The object will appear
heavier. The value then
changes as static electricity is dissipated into the
air or via the weighing
pan.
Error when a charged
object approaches
The apparent value will shift
in the negative direction.
Static attraction from a
charged object, like clothing
(frequent in dry winters) can
cause values to drift.
Better, Safer Measurements.
Understanding and removing static electricity is
critical to accurate weighing. The built-in ionizer
improves weighing by eliminating static. And
because we use the direct current (DC) method, the
ionizer needs no fan. So, you can neutralize static in
fine powders without the risk of compromising your
sample.
Static control is so important we made the built-in
ionizer standard in all Ion Series balances. Simply
hold the sample in the upper neutralizing chamber
for a few seconds before weighing.
Interlocking Doors
Use this feature to open either door
from the opposite side, or open
both doors with one hand. You
work more quickly and efficiently
when you can use both hands.
Units of Measure
MODEL
g
mg
oz
ozt
ct
mom
dwt
GN
Capacity
Readability
Capacity
Readability
Capacity
Readability
Capacity
Readability
Capacity
Readability
Capacity
Readability
Capacity
Readability
Capacity
Readability
MODEL
g
mg
oz
ozt
ct
mom
dwt
GN
Capacity
Readability
Capacity
Readability
Capacity
Readability
Capacity
Readability
Capacity
Readability
Capacity
Readability
Capacity
Readability
Capacity
Readability
Dimensions
Standard Accessories and Features
BM-20
BM-22
BM-252
22
0.000001
22000
0.000001
0.776
0.0000001
0.707
0.0000001
110
0.00001
5.87
0.000001
14.15
0.000001
339.5
0.00002
5.1 /22
0.000001 / 0.00001
5100 / 22000
0.001 / 0.01
0.18 / 0.776
0.0000001 / 0.000001
0.164 / 0.707
0.0000001 / 0.000001
25.5 / 110
0.00001 / 0.0001
1.36 / 5.87
0.000001 / 0.00001
3.28 / 14.15
0.000001 / 0.00001
78.71 / 339.5
0.00002 / 0.0002
250
0.00001
250000
0.01
8.82
0.000001
8.03
0.000001
1250
0.0001
66.67
0.00001
160.7
0.00001
3858
0.0002
BM-200
BM-300
BM-500
220
320
0.0001
320000
0.1
11.29
0.00001
10.29
0.00001
1600
0.001
85.3
0.0001
205.8
0.0001
4938
0.002
520
220000
7.76
7.07
1100
58.7
141.5
3395
520000
18.34
16.72
All BM Series balances come with the AD-1688 Data
Logger, A&D WIN-CT software, and are compliant with
GLP / GMP / GCP / ISO industry best practices.
RS-232 and USB ports
are standard on all
BM Series balances.
AD-1688 Weighing Data Logger
Stores up to 5,000 weighing results with date, time,
temperature, humidity and atmospheric pressure.
Download to a PC via USB port.
2600
138.7
334.4
8024
(mm/inches)
MODEL
BM-20/22
BM-252/200/300/500
Pan diameter (A in drawing)
25 / 0.98
90 / 3.54
Dedicated Weighing Pans for BM-20/22
The BM-20 and BM-22 include two filter weighing pans,
designed to minimize the influence of drafts.
ø50 mm
ø95 mm
Also included with the BM-20 and BM-22 are holders for
micro-centrifuge tubes and 3 sizes of disposable
aluminum pans with diameters of 8, 12, 15 mm.
Microbalances | Semi-Microbalances | Analytical Balances
BM Series Specifications
MODEL
Weighing capacity
Minimum weighing value
Repeatability
(Standard Deviation)
Linearity
Stabilization time (set to FAST)
Sensitivity drift (10 °C to 30 °C)
Operating temperature
Display refresh rate
Measurement Units
(Display mode)
Counting mode
Percent mode
Internal Memory
External Data Logger
Data Output
Standard interface
Internal calibration
External calibration masses (g)
Ionizer electrode pin life
Weighing pan diameter
Power consumption
External dimensions / Weight
Standard accessories
BM-20
22 g
0.001 mg
0.0025 mg (for 1 g)
±0.010 mg
Approx. 10 sec.
BM-22
BM-252
BM-200
BM-300
BM-500
5.1 g / 22 g1
250 g
220 g
320 g
0.001 mg / 0.01 mg
0.01 mg
0.1 mg
0.004 mg (for 1 g)
0.03
mg
(for
100
g)
0.1
mg
0.2 mg
/ 0.01 mg
±0.010 mg / ±0.02 mg
±0.010 mg
±0.2 mg
±0.3 mg
Approx. 10 / 8 sec.
Approx. 8 sec.
Approx. 3.5 sec.
±2 ppm / °C ( When automatic self calibration is not used )
5 °C to 40 °C (41 °F to 104 °F), 85% RH or less (non-condensing)
5 times / second or 10 times / second
520 g
±0.5 mg
g, mg, oz, ozt, ct, momme, dwt, GN, tael, tola, messghal, pieces (counting mode), % (percent mode), Specific gravity
Minimum unit mass = 0.1 mg / Number of samples = 10, 25, 50 or 100 pieces
Minimum 100% ref. mass = 10.0 mg / Minimum 100% display = 0.01%, 0.1%, 1% (depends on the reference mass stored)
200 sets weighing data / 100 sets with date & time / 50 sets of calibration data
Store up to 5,000 weighing results with date & time to AD-1688 (standard)
GLP / GMP / GCP / ISO compliant. Outputs: balance manufacturer, model,
s/n, balance identification number, data, time of calibration, mass used, and space for signature.
RS-232C, Quick USB, External key plug for optional foot switch (SW:128)
Motor-driven internal calibration
20, 10, 5, 2, 1
200, 100, 50, 20, 10
200, 100, 50
300, 200, 100, 50 500, 300, 200, 100, 50
Approx. 10,000 hours of continuous use. (User replaceable)
25 mm (50 mm, 95 mm for weighing filters)
90 mm
Approx. 30 VA (supplied by the AC adapter)
259 (W) x 466 (D) x 326 (H) mm / Approx. 10 kg
AC adapter, Instruction manual, WinCT (CD-ROM), Weighing Data Logger (AD-1688), Long Tweezers for calibration mass (AD-1689),
Standard Tweezers. BM-20/22 also includes two filter weighing pans, microfuge holders and 3 sizes of disposable pans.
1 Smart range function: The minimum weighing value switches to 0.01 mg automatically when the display value exceeds 5.1 g but returns to 0.001 mg by pressing the RE-ZERO (tare) key.
Options
Accessories
• BM-082 Ethernet interface with WinCT-Plus software
• BM-14
2
Pipette Accessory Testing Kit
BM-08 and the standard Quick USB interface cannot be used at
the same time.
Option BM-14
• AD-1653
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
AD-1670
AD-1672
AD-1682
AD-1684
AD-1688
AD-1689
AD-1192
AD-8121B
AD-8920A
AD-8922A
AX-BM-031
AX-BM-NEEDLESET
KO:WW9/9
SW:128
AX-T-314A-S
• AX-USB-2920-9P
3
© 2012 A&D Weighing
Density determination kit
(for BM-252/200/300/500 only)
Anti-vibration Table (slab)
Tabletop Breeze Break
Rechargeable battery unit
Electrostatic Fieldmeter
Weighing Data Logger3
Tweezers for calibration weight3
Compact printer
Statistical printer
Remote display
Remote controller
Display covers (5 pcs)
Electrode units
RS-232C cable (9p-9p, 2 m)
Foot switch
External key plug
Serial/USB converter
Included as standard with any BM Series balance
1756 Automation Parkway
San Jose, CA 95131
(800) 726-3364 or (408) 263-5333
Email: scales@andweighing.com
www.andweighing.com
LIT: BM 3/12