Laboratory measurement

Weighing static control

Fanless static-control accessory for weighing workflows, including biological reagent preparation and pipette verification. It neutralizes charged objects without generating an air stream and is not a balance or complete calibration system. Intended use classification is unknown.

Analytical balances

Analytical balance for weighing reagents during biological buffer and medium preparation. This configuration has a 220 g maximum load and 0.1 mg readability; readability should not be treated as minimum usable sample mass. Intended use classification is unknown.

Conductivity meters

雷磁-branded benchtop instrument for conductivity checks on laboratory water and ionic reagent solutions. Supports pure-water, linear and uncompensated measurement modes. The manufacturer explicitly reports a transition between old and upgraded versions; supplied hardware revision requires confirmation. Intended use classification is unknown.

Analytical balances

Selected HR-250AZ model supports reagent weighing for biological solution preparation with internal-mass calibration. The shared page also lists externally calibrated HR-A and dual-range models; those configurations are not included here. Intended use classification is unknown.

Dissolved oxygen meters

雷磁-branded polarographic meter relevant to oxygen measurements in aqueous samples used in biological and environmental laboratory studies. Temperature compensation is automatic, while pressure and salinity compensation are manual. Sterile in-vessel culture monitoring compatibility is not established. Intended use classification is unknown.

Freezing-point osmometers

Measures aqueous-solution osmolality, relevant to controlling biological buffer and culture-solution composition. This ordering configuration includes the A0840-2 head for 150 µL samples. Optional software and printer are separate from the standalone instrument. Intended use classification is unknown.

Benchtop pH meters

雷磁-branded benchtop meter for checking acidity during preparation of biological buffers and culture media. It measures pH, mV and temperature and supports one- to three-point pH calibration. Suitability of the supplied electrode for protein-rich or very small samples is not established. Intended use classification is unknown.

Gravimetric pipette verification

Selected AD-4212B-PT configuration checks pipette delivery by mass-to-volume conversion for biological assay liquid handling. Includes an evaporation trap and thermometer. The manufacturer discourages portable use when 0.001 mg resolution is required. Current software delivery format needs confirmation. Intended use classification is unknown.

Fluorometers

Standalone fluorescence instrument for dye-based nucleic-acid and protein quantification. The manufacturer supports DeNovix assays, commonly used Qubit assays and custom methods. Sensitivity depends on the assay and sample preparation; regulatory intended use is unknown.