Laboratory scales are specialized devices for accurately measuring the mass of solid and liquid substances. These devices are widely used in medicine, various scientific fields, and industry. To ensure reliable results in demanding tests, proper optimization and functioning of the scales are essential. Achieving high-quality measurements in research requires not only purchasing laboratory scales but also properly calibrating and regularly maintaining the equipment.
Laboratory scales are divided by the features of the design into the main types:
Digital — equipped with electronic displays, provide fast measurements, use electronic circuits to determine weight. Most models have an accuracy range of 0.1 to 0.01 g, are not intended for use in conditions of high humidity.
Mechanical — a widespread type of analog devices, easy to transport, accurate, not subject to moisture.
Platform — have a higher load capacity, available in digital and analog models.
Balance scales — consist of a rotating horizontal arm with bowls suspended on arms of equal length.
Electronic instruments are divided by weighing accuracy (discreteness) into three types: analytical, precision and microbalance. Analytical scales have a discreteness of more than 0.1 mg, precision scales — from 1 mg to 1 g, microbalance — from 0.0001 to 0.01 mg.
High-precision equipment is essential for a wide range of tasks. Whether used or new, laboratory scales should be purchased for research and applications such as:
weighing of substances in microdoses;
calibration of syringes, weights, pipettes;
determining the density of liquids and solids;
work with expensive compositions, rapidly degradable, toxic substances.
Before ordering a device it is important to analyze the offers and technical characteristics like weighing limits, division price, accuracy, the presence of additional functions.
Properly positioning equipment is crucial for maximizing result accuracy. Scales should be installed on a stable stand that prevents rocking, distortion, and minimizes vibrations. The stand should be made of non-magnetic material. Plastic or glass stands are not recommended due to their susceptibility to electrostatic charge. The stand must be securely fastened. For optimal placement, position the device in a room's corner, preferably in a room with a single exit to avoid drafts. Direct exposure to sunlight should be avoided
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