RE: Cleanroom Testing Frequency

Answered

How often do I need to test my cleanroom to see if it’s meeting classification requirements? Is there standard protocol for cleanroom calibration, cleanroom certification and cleanroom re-certification?

Add Comment
1 Answers
Best answer

ISO requires that air pressure difference and air flow be tested every 12 months for all classifications. Particle count tests must be performed every 12 months ISO Class 6 and above, every six months for ISO Class 5 and below. There are also tests recommended for all classes, every 24 months: installed filter leakage, containment filter leakage, recovery, and airflow visualization. These tests are regulated by ISO document 14644-2 Cleanroom Testing and Compliance.

It states the maximum time interval between airborne particle concentration testing of a cleanroom of ISO class 5 and below is six months and ISO class 6 and above is 12 months.

Here are some of the common cleanroom testing intervals that I use:

Test Parameter: Airborne particle concentrations
Class: =< ISO Class 5
Maximum Time Interval: 6 Months

Test Parameter: Schedule of additional tests
Class: >ISO Class 5
Maximum Time Interval: 12 Months

Test Parameter: Airflow velocities in unidirectional airflow
Class: All Classes
Maximum Time Interval: 6 Months

Test Parameter: Airflow volume supply in non-unidirectional airflow
Class: All Classes
Maximum Time Interval: 12 Months

Test Parameter: Pressure differentials
Class: All Classes
Maximum Time Interval: Continuously

Answered on May 2, 2018.
Add Comment

Your Answer

By posting your answer, you agree to the privacy policy and terms of service.