Microbalances

Microbalances from RADWAG are laboratory balances with a readability of 1 µg (0.000001 g), designed for weighing the smallest samples with the highest accuracy and repeatability. The range includes MYA 5Y and XA 5Y.M microbalances with a maximum capacity from 0.8 g to 53 g, as well as dedicated versions for filter weighing, pipette calibration and stent weighing. RADWAG microbalances are part of the laboratory balances range and are designed and manufactured in Poland.

What is a microbalance?

A microbalance is a laboratory balance with a readability from 1 µg to 10 µg. It is placed between analytical balances (readability of 0.1 mg or 0.01 mg) and ultra-microbalances (readability of 0.1 µg). At such a high resolution, even an air draft, a temperature change, static electricity or a fingerprint on the container affects the result. That is why microbalances have a closed, draft-proof weighing chamber and systems that reduce the influence of the operator and ambient conditions.

RADWAG microbalance series

Weighing dishes, filter trays, antistatic ionizers and other equipment are available among ultra and microbalance accessories.

Applications of microbalances

• pharmaceutical and chemical analysis of very small samples, active substances and reference standards,
• filter weighing for air quality monitoring and emission testing,
• calibration of piston pipettes according to ISO 8655,
• stent weighing and control of coating mass on medical devices,
• research and quality control in materials science, electronics and nanotechnology.

Technologies that ensure reliable results

• Automatic weighing chamber – the draft-proof chamber opens and closes automatically, which limits the influence of the operator and air movement.
• ReflexLEVEL automatic levelling – the balance levels itself, so an incorrect position does not affect the result.
• Antistatic ionizer – built into XA 5Y.M.A microbalances and available as an accessory, it neutralizes the electrostatic charge of samples and containers.
• Ambient conditions monitoring – cooperation with the THBR 2.0 system for recording temperature, humidity and pressure.
• Data integrity – user management, digital signature according to 21 CFR Part 11, Wi-Fi^®, USB and Ethernet interfaces and cooperation with the E2R System.
• Autotest – a diagnostic function that determines the repeatability of the balance in its working conditions.

How to choose a microbalance?

• Readability and minimum weight – compare your smallest sample mass with the minimum weight (USP) of the balance. MYA 5Y microbalances offer a minimum weight from 0.82 mg.
• Maximum capacity – include the mass of the container or filter. RADWAG microbalances cover a range from 0.8 g to 53 g.
• Application – for filters, pipettes or stents, choose a dedicated version with the right weighing pan and software.
• Chamber and pan size – for larger containers, choose the XA 5Y.M series with a spacious weighing chamber.
• Static electricity – for powders, filters and plastic containers, use a microbalance with an antistatic ionizer.
• Installation site – place the microbalance on an anti-vibration table in a room with stable temperature and humidity, away from doors, air conditioning and direct sunlight.
• Compliance – for GLP and GMP laboratories, check user management, electronic data recording and calibration options. Use mass standards for routine checks.

FAQ – microbalances

What is the readability of a microbalance?

RADWAG microbalances have a readability of 1 µg (0.000001 g). MYA 5Y microbalances offer readability from 1 µg to 10 µg, and XA 5Y.M microbalances from 1 µg to 5 µg.

What is the difference between a microbalance and an analytical balance?

An analytical balance has a readability of 0.1 mg or 0.01 mg and a capacity of up to several hundred grams. A microbalance has a readability of 1 µg, a capacity of up to about 50 g and requires more stable ambient conditions.

What is the minimum weight of a microbalance?

The minimum weight is the smallest sample mass that can be weighed with the required accuracy. According to the USP criterion, the lowest minimum weight of MYA 5Y microbalances is 0.82 mg. The actual value depends on the installation site and should be determined in working conditions.

Where should a microbalance be installed?

Install the microbalance on a stable anti-vibration table in a room with constant temperature and humidity, away from doors, windows, air conditioning outlets and direct sunlight. After installation, allow the balance to acclimatize before weighing.

Which microbalance is suitable for pipette calibration and filter weighing?

For pipette calibration according to ISO 8655, choose MYA 5Y.P or XA 5Y.M.A.P microbalances. For filter weighing, MYA 5Y.F microbalances are available in a dedicated version for filters.

Are RADWAG microbalances suitable for regulated laboratories?

Yes. They offer user management, digital signature according to 21 CFR Part 11 and data export to IT systems, which supports work in GLP and GMP laboratories.

Not sure which microbalance fits your application? Contact our specialists for help with selection, installation and calibration.