SOP on Cleaning of Mass Mixer

SOP on Cleaning of Mass Mixer


SOP on Cleaning of Mass Mixer

Objective: To describe cleaning procedure for mass mixer.

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/nylon brush / lint free cloth

3.     SS Jug


1. Fill the mass mixer with 30 liters of hot tap water and run the mass mixer for 10 minutes.

2. Remove any visible material from surfaces of mass mixer, shaft and blades with the help of brush.

3. Drain out the water by tilting the mass mixer and with the help of a SS jug.

4. Prepare a Teepol solution (10ml à 10 liters water) or liquid-soap (50gm à 5 liters water) and clean the surfaces, shaft and blades with clean cloth & brush.

5. Wash the inner surfaces of the mass mixer by running tap water for 5 minutes, drain the washings. Repeat the procedure for another 5 minutes & again drain the washings.

6. Wash the inner surfaces of the mass mixer by using 30 liters of purified water for 10 minutes and drain the washings.

7. Finally rinse the mass mixer with previously heated purified water and drain it completely. Pour 5 liters of purified water in mass mixer and run for 5 minutes.

8. Send the wash water for analysis of residual active materials of previous product.

9. Let it air dry and cover the equipment and put a label “Cleaned” or “Ready for use”.

Reason for Review: – Minor revision in format.

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SOP on Cleaning of Mass Mixer

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