A&D Ion BM Series Analytical & Microbalances

A&D Ion BM Series Analytical & Microbalances eliminate interference with easy ION switch – allows built-in fanless internal ionizer to neutralize electrostatically charged objects instantly at no additional costs. It’s large breeze chamber is flexible enough to allow all sample vessels, small or large. The anti-static glass coating blocks outside electoral interferences and the built-in environmental sensors monitor and displays the temperature, humidity, and atmospheric pressure. 

These balances feature superior functionality with illuminated, back-mounted spirit level bubble to help reduce leveling time and increase accuracy and precision. One-touch Full Digital Calibration ensures balance is calibrated onsite for the best performance. The auto self-calibration will detect changes in ambient temperature and auto calibrate.

Key Features

  • Enhanced OES Ordinal Electromagnetic Sensor with Micro 0.001mg resolution
  • Anti-static glass breeze break with a thin evaporated metal coating
  • Adjustable (manual or automatic) response characteristics to help cope with the effect of drafts and vibrations
  • Automatic self-calibration to maintain accuracy under temperature changes
  • Embedded temperature, humidity and atmospheric pressure sensors
  • Multiple weighing units: g, mg, oz, ozt, ct, mom, dwt, grain, specific gravity
  • Comes equipped with the handy AD-1688 weighing data logger
  • GLP/GMP/GCP/ISO compliant output
  • Counting mode with the Automatic Counting Accuracy Improvement (ACAI) function
  • Percent mode function
  • Comparator function with buzzer
  • Underhook function
  • Special pans/holder (BM-20/22)
  • Density determination function and an optional density determination kit (for BM-252/200/300/500 only)
  • RS-232C and Quick USB interfaces as standard

Specifications for A&D Ion BM Series Analytical & Microbalances
Model BM-20 BM-11 BM-252 BM-200 BM-300 BM-500
Weighing Capacity 22 g 5.1 g / 22g1 250 g 220 g 320 g 520 g
Minimum Weighing Value 0.001 mg 0.001 mg / 0.01 mg 0.01 mg 0.1 mg
Repeatability (Standard Deviation) 0.0025 mg (for 1g) 0.004 mg (for 1 g) / 0.01 mg 0.03 mg (for 100g) 0.1 mg 0.2 mg
Linearity ±0.010 mg ±0.010 mg / ±0.02 mg ±0.010 mg ±0.2 mg ±0.3 mg ±0.5 mg
Stabilization Time (set to FAST) 10 sec 10 / 8 sec 8 sec 3.5 sec
Sensitivity Drift 
(10°C to 30°C)
±2 ppm / °C (when automatic self-calibration is not used)
Operating Temperature 5°C to 40°C , 85% RF or less (non-condensing)
Display Refresh Rate 5 times / second or 10 times / second
Measuring 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 = 0.1 mg / 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 identification 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 (50mm, 95mm for weighing filters) 90 mm
Power Consumption Approx. 30 VA (supplied by the AC adapter)
External Dims & Weight 259 (W) x 466 (D) x 326 (H) / 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 holder, and 2 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 0.01 mg by pressing the RE-ZERO (tare) key.

Item Capacity Model Resolution Unit of Measure Price Purchase
5.1 g / 22 g BM-22 (Smart Range) 0.001 mg (1 µg) / 0.01 mg (10 µg) Each
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520 g BM-500 0.1 mg Each
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250 g BM-252 0.01 mg (10 µg) Each
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320 g BM-300 0.1 mg Each
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22 g BM-20 0.001 mg (1 µg) Each
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220 g BM-200 0.1 mg Each
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