analytical laboratory balance stainless steel weighing pan

highly accurate weighing instruments

Analytical balances are highly accurate weighing instruments. Due to the sensitivity of the high-performance weighing cell, analytical balances are fitted with a draft shield to ensure a stable weighing environment. With capacity ranging from 52 to 520 g and readability from 0.002 to 1 mg, common analytical balance applications include sample and standard preparation, formulation, differential weighing, density determination, and pipette routine testing.

Analytical laboratory balance

When laboratory work and research require accuracy to the hundredthousandth, there is simply no room for error. The Explorer series of semimicro balances has been designed with the technology to ensure that your very specific weighing results are accurate. Sophisticated laboratories requiring accuracy and looking for innovative technology to obtain measurement results can find both in Explorer semi-micro balances.

Geared for high-performance with up to 0.01mg readability and capacities up to 220g. The Auto-Cal Internal Calibration system ensures accuracy of results in applications that require high precision.

Physical Influences and Calibration

Analytical balance readouts can be affected by changes in the sample and/or container as well as other physical influences.

Use clean and dry containers for samples, and avoid beakers with large or wide openings. Pick the smallest container possible, and cover it if needed.

Condition the sample/container to the prevailing temperature, to avoid issues with repeatability and weighing results. You may also find drifts in the readout value (even with a stable display when the balance isn’t loaded) otherwise.

Evaporation may occur in uncovered samples/containers, or they may absorb water if handled with bare fingers. Readouts could increase or decrease continuously, or you may find drift (even with a stable display when the balance isn’t loaded).

High precision balance

Electrostatically charged samples/containers (e.g., glass or plastic) or very low humidity may cause non-repeatable values or drifts in one direction. Shield the sample with metal foil or a metal container, increase the humidity and neutralize static electricity with an ionizing blower.

Magnetic force fields can lead to stable but non-repeatable values, or changes in display based on the sample’s position. Avoid using magnetic stirring bars, shield samples with Mumetal foil or non-magnetic objects, use anti-magnetic weighing pans and demagnetize the pan before weighing.