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 cleanroom standards

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