Precision Balance Measurement and Maintenance

The video tutorial provides an overview of precision and analytical balances, highlighting their differences in capacity and minimum division. It explains the importance of cleaning and maintaining balances, detailing the steps for cleaning both precision and analytical balances safely. The video also covers the procedures for leveling and calibrating balances to ensure accurate measurements. Finally, it emphasizes the need for professional calibration and concludes with a call to action for viewers to engage with the content.

What is the maximum weight that a precision balance can measure?

• 2 kilograms

• 220 grams

• 1 kilogram

• 500 grams

Which balance should be used for measuring small quantities of a substance?

• Mechanical balance

• Digital balance

• Analytical balance

• Precision balance

What is the minimum division of a precision balance?

• 0.1 milligrams

• 1 milligram

• 10 milligrams

• 100 milligrams

Why is it important to clean the balance without electrical power?

• To save energy

• To avoid damaging the balance

• To prevent electric shock

• To ensure accurate measurements

What should be used to clean a solid substance from the balance?

• Brush

• Solvent

• Water

• Cloth

What is the first step in cleaning an analytical balance?

• Remove the weighing pan

• Use a solvent

• Check for spills

• Disconnect the power

What should be checked to ensure the balance is level?

• The calibration settings

• The power connection

• The weighing pan

• The bubble in the level indicator

What happens if a balance is not level?

• It will give incorrect mass values

• It will not turn on

• It will calibrate itself

• It will overheat

What feature does the analytical balance in the laboratory have for calibration?

• No calibration

• Auto-calibration

• Manual calibration

• External calibration

What should be avoided during the calibration process?

• Turning off the balance

• Using the balance

• Moving the balance

• Cleaning the balance