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Question:

How often does a HEPA filter need to be certified?

A Every 6 months
explanation

USP ,797. requires that a laminar airflow workbench must be certified every 6 months un- less the HEPA filter becomes wet.

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Comments

Shaniac20

4 years ago

I recommend!

Mingy6

4 years ago

I like this App a lot. I got a few apps to prepare for PTCE but this is the best one so far! It has tests and practice questions with explanations.

Bfarley14

4 years ago

Awesome app

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