SOP on Cleaning of Stirrer
Objective : To describe cleaning procedure for stirrer.
Scope : To ensure that the equipment is clean and free from any starting materials of previous batch or product residues.
Responsibility : 1.It is the responsibility of operating staff to clean the equipment.
2. Production Chemist to ensure that procedure is followed.
Materials & Equipment :
1. Cleaning agent: Teepol or liquid soap.
2. Mops / brush / lint free cloth
Procedure
(1) Rinse the stirrer with boiled tap water and drain the washings.
(2) Prepare a Teepol solution (10ml à 10 liters water) or liquid-soap (50gm à 5 liters water) and clean the surfaces of rod and propeller by mopping.
(3) Wash the surfaces of the rod and propeller by running tap water for 10 minutes and drain the washings. Repeat the procedure for another 10 minutes and again drain the washings.
(4) Wash the surfaces of rod and propeller by using 5 liters of purified water for 5 minutes and drain the washings.
(5) Finally rinse the rod and propeller with previously boiled purified water and drain it completely.
(6) Send the wash water for analysis of residual active ingredients of previous product.
(7) Let it dry in air, reassemble the stirrer in tank and put a label “Cleaned” or “Ready for use”.
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