Laboratory Maintenance Quiz

What is the primary purpose of day-to-day maintenance in a laboratory?

• To conduct experiments

• To ensure a safe and organized working environment

• To calibrate equipment

• To order new chemicals

Which of the following is NOT a part of day-to-day maintenance in a laboratory?

• Clearing and cleaning working surfaces

• Replacing glass sheets

• Prompt disposal of waste

• Washing up and decontaminating glassware

What should be checked daily in a laboratory environment?

• Temperature and living organisms

• Expiry dates of chemicals

• Calibration of pH meters

• Fire-fighting equipment

What is the purpose of holiday maintenance in a laboratory?

• To conduct experiments

• To prepare and tidy up the laboratory

• To order new equipment

• To train new staff

Which of the following tasks is typically performed during holiday maintenance?

• Daily cleaning of glassware

• Major repair work on equipment

• Calibrating micropipettes

• Checking the temperature daily

What is the first step in calibrating a pH meter?

• Rinse the electrode with deionised water

• Soak the pH electrode in cleaning solution

• Place the electrode in pH 7 buffer

• Adjust the temperature to 25°C

Why are buffer solutions used to calibrate pH meters?

• They are easy to prepare

• They resist changes in pH

• They are inexpensive

• They are highly reactive

How often should a micropipette be calibrated?

• Every month

• Every 3-6 months

• Every year

• Every 2 years

What is the accuracy range of a 'fourth place balance'?

• +/- 0.01 to +/- 0.05 mg

• +/- 0.05 to +/- 0.1 mg

• +/- 0.1 to +/- 0.5 mg

• +/- 0.5 to +/- 1 mg

What should be used to transfer standard weights when checking the accuracy of a balance?

• Metal-tipped forceps

• Fingers

• Ivory-tipped forceps

• Plastic gloves