EU follows Annex 1 where the cleanrooms are classified based on Grades, A, B, C and D while the ISO 14644 is on Class N, where N = 1 to 9.
When it comes to URS for a facility do you use over the other - meaning do you say Grade vs Class? When would one become a requirement over the other?
Thanks in advance
When it comes to URS for a facility do you use over the other - meaning do you say Grade vs Class? When would one become a requirement over the other?
Thanks in advance