To calibrate the equipment for reliable and accurate results.
This procedure is applicable to the Polarimeter, installed in API Quality Control Lab.
3.1 Doing : Technical Assistant
3.2 Checking : Executive /Manager
Head of the Department
Frequency : Once in a three month
5.1 Operate the instrument as per SOP.
5.2 Prepare 10%, 20%, 30%, 40% and 50% w/v aqueous solution of AR grade sucrose (previously dried) in purified water.
5.3 Note the temperature of the solution and determine the optical rotation three times by changing the solution in tube and record the mean.
5.4 Calculator corrected Optical Rotation at 200C (a20) using following formula.
a20 = Optical rotation to be corrected at 20oC
at = Optical rotation to be corrected at toC
t = Temperature measured by sensor
k = Temperature correction factor (-0.00045)
5.5 Record the value in annexure I, if it is out of limit, follow the S.O.P.
6.1 % = Percentage
6.2 w/v= weight by volume
6.3 0C=Degree centigrade
6.4 API=Active Pharma Ltd.
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.
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