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Cleanroom Classifications acc. to US FEDERAL STANDARD 209D

 

Class

MEASURED PARTICLE SIZE (MICROMETERS)

0.1

0.2

0.3

0.5

5.0

1

35

7.5

3

1

NA

10

350

75

30

10

NA

100

NA

750

300

100

NA

1,000

NA

NA

NA

1,000

7

10,000

NA

NA

NA

10,000

70

100,000

NA

NA

NA

100,000

700