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
