SOP for Plate Exposure : Pharmaceutical Guidelines

SOP for Plate Exposure

Standard operating procedure of plate exposure in the areas after fumigation in controlled area.


      To lay down the procedure for plate exposure in areas which have been fumigated, in order to determine the efficacy of fumigation.

2.0 SCOPE:

      This SOP shall be applicable to Quality Control Dept.




      Sr. Manager Quality Assurance


5.1 Prepare sterile plates of Nutrient Agar as per the procedure described in SOP for media preparation on the day of fumigation or prior to fumigation.
5.2 Preincubate the plates at 30 - 35° C for 24 hours, before use.
5.3 Stack the preincubated petridishes in a stainless steel canister and take the canister to the fumigated area.
5.4 Before exposing the plates, ensure that the airflow of the fumigated area has been switched on and the area is free of the fumes. Expose two plates at two ends of the fumigated room
5.5 Remove the plate from the canister and take it to the point of exposure.
5.6 Remove the lid of the plate and place it beside the plate, in an inverted position.
5.7 Expose the plate for a period of 30 minutes.
5.8 At the end of 30 minutes, place the lid back on the plate and mark the plate, mentioning the date and point of exposure.
5.9 Put the plate back into the canister.
5.10 Incubate the plate at 30 - 35° C for 5 days.
5.11 Count the number of colonies at the end of 5 days.
5.12 The count should not exceed 100 cfu/plate.
5.13 If the count exceeds 100, it indicates that fumigation was ineffective.
5.14 In this case, refumigate the area and repeat the entire procedure described above.


6.1 SOP : Standard Operating Procedure
6.2 cfu : Colony Forming Unit
6.3 QC : Quality Control
6.4 Dept. : Department

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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