Clean Room Classification

 

ISO

14644-1

Classe 3

Classe 4

Classe 5

Classe 6

Classe 7

Classe 8

Federal Standard 209E

1

10

100

1.000

10.000

100.000

EUCGMP

-

-

A/B

-

C

D

Ricambi orari di aria

360/540

300/540

240/480

150/240

60/90

5/48

BS 5295 cleanroom standards

maximum particles/m³

Class

≥0.5 µm

≥1 µm

≥5 µm

≥10 µm

≥25 µm

Class 1

3,000

0

0

0

Class 2

300,000

2,000

30

Class 3

1,000,000

20,000

4,000

300

Class 4

200,000

40,000

4,000

BS 5295 Class 1 also requires that the greatest particle present in any sample does not exceed 5 μ GMP EU classification

Class

maximum particles/m³[11]

At Rest At Rest In Operation In Operation

0.5 µm

5 µm

0.5 µm

5 µm

Class A

3,520 20 3,500 20

Class B

3,520 29 352,000 2,900

Class C

352,000 2,900 3,520,000 29,000

Class D

3,520,000 29,000 n/a n/a