Description

A&D Scale PN BM-22

A&D Scale PN BM-22 is a professional dual-range microbalance with internal calibration and a built-in fanless ionizer, designed for ultra-precise weighing in laboratories, pharmaceutical facilities, research institutions, environmental analysis, chemical testing, quality control, cannabis testing, manufacturing, and other demanding scientific applications. The BM-22 features A&D’s Smart Range weighing system, providing a precision range of 5.1 g with 0.000001 g (0.001 mg / 1 µg) readability and a standard range of 22 g with 0.00001 g (0.01 mg) readability. This combination provides true microgram-level measurement performance while retaining additional capacity for tare containers and larger samples.

A major advantage of the A&D BM-22 is its built-in fanless ionizer, which helps neutralize static electricity that can interfere with microgram-level weighing. Electrostatic charges on powders, plastics, filters, containers, pharmaceutical ingredients, films, and other materials can contribute to unstable readings and measurement errors. The integrated static eliminator helps reduce this interference directly within the weighing workflow, while its fanless design avoids introducing additional air movement around extremely sensitive samples. Anti-static glass panels further help protect the weighing environment from external electrostatic effects.

The BM-22’s Smart Range function automatically switches readability depending on the displayed weight. The balance provides 0.001 mg readability up to 5.1 g and 0.01 mg readability up to its full 22 g capacity. After placing a tare container on the balance, pressing the RE-ZERO key allows the precision range to be used again when the net sample weight remains within the high-resolution capacity. This makes the BM-22 particularly useful for applications that require microgram-level sample measurement inside heavier weighing vessels.

Designed for extremely sensitive measurements, the BM-22 features a Ø25 mm weighing pan inside a large enclosed weighing chamber that helps minimize the effects of drafts, vibration, and environmental disturbances. The balance provides 0.004 mg repeatability at 1 g in the precision range, 0.01 mg repeatability in the standard range, and linearity of ±0.010 mg / ±0.02 mg depending on the active range. Its typical minimum weight is 5 mg under A&D’s specified USP Chapter 41 methodology.

The BM-22 includes a motor-driven internal calibration system with automatic self-calibration, helping maintain weighing accuracy as environmental conditions change. Users can also initiate calibration when required, reducing the need to routinely handle separate external calibration weights. Automatic Response Adjustment helps optimize balance performance for the surrounding environment, while built-in monitoring capabilities can provide information related to temperature, humidity, and atmospheric pressure.

For professional laboratory workflows, the BM-22 supports multiple measurement functions, including standard weighing, piece counting, percentage weighing, density determination, and specific-gravity applications. The balance includes a micro-tube holder and supports specialized weighing procedures for very small samples. Its high resolution makes it particularly suitable for quantitative and elemental analysis, environmental testing, pharmaceutical research, filter measurement, reference materials, and other applications where extremely small mass changes must be detected.

Standard RS-232C and USB connectivity allows the BM-22 to communicate with compatible computers, printers, laboratory software, and data-collection systems. The interfaces can support simultaneous data workflows, such as sending information to a printer through RS-232C while transmitting weighing data to a computer through USB. The balance also supports internal storage for weighing and calibration records and compliance-oriented reporting for GLP, GMP, GCP, and ISO workflows.

Whether you’re performing pharmaceutical research, environmental analysis, chemical testing, laboratory sample preparation, cannabis testing, filter weighing, static-sensitive material measurement, or other ultra-precision scientific work, the A&D Scale PN BM-22 delivers the sensitivity and advanced functionality required for demanding micro-weighing applications. Its 5.1 g × 0.001 mg precision range, 22 g × 0.01 mg standard range, built-in fanless ionizer, automatic internal calibration, anti-static weighing chamber, Smart Range technology, and RS-232C and USB connectivity make it a powerful solution for professional microbalance applications.

BM family dual range micro/semi-micro balance, 5.1 g / 22 g x 0.001 mg / 0.01 mg with RS-232C and built-in static eliminator, 120V

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