CRLevel 1

Clean Room Classification Types

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CR.01ISO Class 1

CR.02ISO Class 2

CR.03ISO Class 3

CR.04ISO Class 4

CR.05ISO Class 5 (Class 100)

CR.06ISO Class 6 (Class 1000)

CR.07ISO Class 7 (Class 10000)

CR.08ISO Class 8 (Class 100000)

CR.09ISO Class 9

CR.10GMP Grade A

CR.11GMP Grade B

CR.12GMP Grade C

CR.13GMP Grade D

CR.14Cleanroom Monitoring

Cross-system equivalences1

NAICS 2022

5419Other Professional, Scientific, and Technical Servicesbroad

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