LABORATORY INSTRUMENT

Weighing Scales or Analytical Balance

Weighing scales: For weighing large quantities.

Analytical balance: For accurate weighing of smaller quantities.

Use and Care

1. The weighing equipment must be placed on a firmbench, away from vibration, draughts, direct sunlight and dust.

2. It should be kept perfectly horizontal by altering thescrews on which the equipment stands.

3. Chemicals, etc. should never be placed directly on thepans. Weigh them in a container.

4. Never touch the weights with hands, handle them withforceps.

5. The balance should be at rest before adding or removing the weights or chemicals.

6. Before taking the reading, the glass window of theinstrument should be closed.

Electronic analytical balances are also available. Made by various companies, these are very accurate.