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Calibration of Micropipettes


Learn how to calibrate the Micropipettes using distilled water.

1.0  Equipments Required

       Micropipettes
       Micro tips
       Calibrated balance

2.0  Material Required

       Distilled water

3.0  Procedure:

3.1  Calibrate the micropipettes in a vibration free room at a constant temperature of water between 20 to 25°C.
3.2  Calibrate the Micropipettes for a volume of 100 and 1000 ml; and for 20 and 200 ml.
3.3  Set the desired volume using the volume-setting knob.
3.4  Carefully fit tip into tip cone and flush with distilled water by pipetting the adjusted volume at least 3 – 4 times.
3.5  Carefully aspirate the liquid and pipette the sucked volume of distilled water into a tare 10 ml volumetric flask.
3.6  Repeat at least ten times and record the result.
3.7  Calculate the pipetted volume, taking the temperature into account.
3.8  After calibration, immediately put the “CALIBRATION” tag duly filled with necessary information

4.0  Precaution

4.1  Use an analytical balance with a readability of 0.1 mg.

5.0  Frequencies

       Quarterly

6.0  Limits/ Acceptance Criteria


Micropipettes ID
Volume in ml
Tolerance Limit in ml
Min
Max
A
100
99.9
100.1
1000
999.0
1001.0
B
20
19.98
20.02
200
199.8
200.2

7.0  Abbreviation

       SOP : Standard Operating Procedure
Ankur Choudhary is India's first professional pharmaceutical blogger, author and founder of Pharmaceutical Guidelines, a widely-read pharmaceutical blog since 2008. Sign-up for the free email updates for your daily dose of pharmaceutical tips.
Email: .moc.enilediugamrahp@ofni Need Help: Ask Question


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