How often am I supposed to get my cleanroom validated?

February 2, 2012 by Renzo

ISO 14644-2 specifies that a cleanroom that is ISO class 5 or cleaner needs to have their testing procedures done every 6 months. For any cleanrooms less stringent (class 6 through 9) it is only necessary once per year.

Strategic Testing: (Table 1) Schedule of Tests to Demonstrate Continuing Compliance.

Test Parameter	Class	Maximum Time Interval	Test Procedure
Particle Count Test	< or = ISO 5	6 Months	ISO 14644-1 Annex A
Particle Count Test	> ISO 5	12 Months	ISO 14644-1 Annex A
Air Pressure Difference	All Classes	12 Months	ISO 14644-1 Annex B5
Airflow	All Classes	12 Months	ISO 14644-1 Annex B4

Strategic Testing: (Table 2) Schedule of Additional Optional Tests.

Test Parameter	Class	Maximum Time Interval	Test Procedure
Installed Filter Leakage	All Classes	24 Months	ISO 14644-3 Annex B6
Containment Leakage	All Classes	24 Months	ISO 14644-3 Annex B4
Recovery	All Classes	24 Months	ISO 14644-3 Annex B13
Airflow Visualization	All Classes	24 Months	ISO 14644-3 Annex B7