How do I set a limits to cfu in an ISO class 7 Clean Room?

Hi all,

We are planning to put a settle plates in our cleanroom as part our monitoring plan. The question is how do I set a limits to cfu, how much is ok? Our clean room is ISO class 7. I can't find anything in the standards, I need to justify cfu limits somehow.

Thanks,
Alex.

I can't find anything in the standards

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Where are you looking? The ISO 14644 standard series includes CFU-count-based definitions for "cleanroom" levels.

Our clean room is ISO class 7.

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Says who, according to what standards-based evaluation? If you or someone else has determined that it's ISO Class 7, someone must already have evaluated it in regard to ISO 14644. If you won't have any such evaluation-results available to you, you might want to stop considering it to conform to a particular ISO level until you've brought it into control, which includes regular measurement.

Lokus200 said:

Hi all,

We are planning to put a settle plates in our cleanroom as part our monitoring plan. The question is how do I set a limits to cfu, how much is ok? Our clean room is ISO class 7. I can't find anything in the standards, I need to justify cfu limits somehow.

Thanks,
Alex.

Click to expand...

Refer an existing thread - How to set Cleanroom Alert and Action Limits as part of Microbiological Evaluation