Sample interview questions: How do you ensure the proper calibration and verification of analytical balances and pipettes?
Sample answer:
Calibration and Verification of Analytical Balances
- Calibration:
- Use certified reference weights to verify the accuracy and linearity of the balance.
- Calibrate the balance regularly (daily or weekly) according to manufacturer’s specifications.
- Record calibration data and maintain calibration certificates.
- Verification:
- Perform daily weight checks using a known mass standard.
- If the balance fails verification, re-calibrate and verify again.
- Monitor the balance’s performance over time to detect any changes in accuracy.
Calibration and Verification of Pipettes
- Calibration:
- Utilize a gravimetric method or certified volumetric solutions to establish pipette volume.
- Calibrate pipettes regularly (monthly or quarterly) or as required by the manufacturer.
- Document calibration data and maintain calibration records.
- Verification:
- Perform a weight check by carefully weighing dispe… Read full answer