Sampling method for filter bag


I need to sample filter bag of fluid bed dryer for cleaning validation. Which is the best method?
A. Contact plate
B. Swab
C. Rinse

Thank you.

For filter bag cleaning validation, the preferred method of sampling would be by Rinse technique.

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Thank you for your reply. How about sampling for microbial test? Does rinse method work?

Swab Test for microbial test.

Swab test

Yes,Thank you.

So, there will be two cases:

  1. Rinse sample from Filter bag itself, by dipping it in solvent/WPU…or no needed if dedicated bags used?
  2. Rinse water from outlet of washing machine after self cleaning of washing machine.

Could you please define the how and rinse sample qty. that can be taken ?