Weighing Scale Supplier & Scale Repair Center

A&D Weighing ION Series BM Micro Balance

A&D Weighing ION Series BM Micro Balance

A&D BM series analytical balances feature, Readability to 1µg (0.001 mg), Built-in Fanless Ionizer Standard Large Weighing Chamber, Automatic Response Adjustment, Automatic Self Calibration, GLP/GMP/GCP/ISO Compliant, AD-1688 Data Logger included


Call: (919) 776-7737

Weighing is at the heart of many laboratoryprocesses 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 mg. The BM-20 and BM-22 let you handle with confi dence 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. The BM-20 and BM-22 microbalances have the performance and standard accessories to simplify microgram measurements. The Ion Series now makes microgram (mg ) measurements accessible to all researchers and offers a real choice in microbalances.

MODEL BM-20 BM-22 BM-252 BM-200 BM-300 BM-500
Weighing capacity 22g 5.1g / 22g* 250g 220 g 320 g 520 g
Minimum weighing value 0.001mg 0.001mg / 0.01 mg 0.01mg 0.1mg

Repeatability/Std Dev

0.0025mg (for 1g) 0.004mg (for 1g) / 0.01mg 0.03mg (for 100g) 0.1mg 0.2mg
Linearity ±0.010mg ±0.010mg / ±0.02mg ±0.010mg ±0.2mg ±0.3mg ±0.5mg
Stabilization Time (set to FAST) Approx. 10 sec. Approx. 10 / 8 sec. Approx. 8 sec. Approx. 3.5 sec.
Sensitivity Drift (10°C-30°C) ±2ppm/°C (when automatic self calibration is not used)
Operating temperature 5°C to 40°C (41°F to 104°F), 85%RH or less (non-condensing)
Display Refresh rate 5 times / second or 10 times / second
Measurement Units (Display mode) g, mg, oz, ozt, ct, momme, dwt, GN, tael, tola, messghal, pieces (counting mode), % (percent mode), Specific gravity
Counting mode Minimum unit mass = 0.1mg / Number of samples = 10, 25, 50 or 100 pieces
Percent mode Minimum 100% ref. mass = 10.0 mg / Minimum 100% display = 0.01%, 0.1%, 1% (depends on the reference mass stored)
Internal Memory 200 sets weighing data / 100 sets with date & time / 50 sets of calibration data
External Data Logger Store up to 5,000 weighing results with date & time to AD-1688 (standard)
Data Output GLP / GMP / GCP / ISO compliant. Outputs: balance manufacturer, model, s/n, balance identifi cation number, data, time of calibration, mass used, and space for signature.
Standard interface RS-232C, Quick USB, External key plug for optional foot switch (SW:128)
Internal Calibration Motor-driven internal calibration
External Calibration masses (g) 20, 10, 5, 2, 1 200, 100, 50, 20, 10 200, 100, 50 300, 200, 100, 50 500, 300, 200, 100, 50
Ionizer electrode pin life Approx. 10,000 hours of continuous use. (User replaceable)
Weighing pan diameter 25 mm (50 mm, 95 mm for weighing filters) 90 mm
Power consumption Approx. 30 VA (supplied by the AC adapter)
External dimensions / Weight 259 (W) x 466 (D) x 326 (H) mm / Approx. 10 kg
Standard accessories
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.
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.

Accessories Available

BM-08 Ethernet interface with WinCt-Plus software

AD-1653 Density Determination Kit
(for BM-252/200/300/500 only)

AD-1670 Anti-vibration Table (slab)

AD-1672 Tabletop Breeze Break

AD-1682 Rechargeable Battery Pack