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Analytical balances are accurate and precise instruments to measure weights. They require a draft-free location on a solid bench that is free of vibrations. Modern balances have built-in calibration weights to maintain accuracy. Older balances should be calibrated periodically with a standard weight. A few weighing tips follow: Do not bump or place objects on the bench after zeroing the balance.Weigh powders on weighing paper or in weighing dishes. Handle objects with tongs, gloves, or weighing paper to prevent fingerprints.Let hot objects cool before weighing.Weigh hygroscopic materials rapidly since they will absorb water during weighing.When making repetitive weighings always use the same procedure.
Picture of an analytical balance
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