ISO standard 14644-1 14644 cleanroom clean room class limits

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ISO Standard 14644-1 cleanroom Class Limits

ISO Classification Number	Maximum concentration limits( Particles/m3 of air) for particles equal to and larger than the considered sizes shown below
	>= 0.1µm	>= 0.2m	>= 0.3µm	>= 0.5µm	>= 1µm	>= 5.0µm
ISO Class 1	10	2
ISO Class 2	100	24	10	4
ISO Class 3	1000	237	102	35	8
ISO Class 4	10000	2370	1020	352	83
ISO Class 5	100000	23700	10200	3520	832	29
ISO Class 6	1000000	237000	102000	35200	8320	293
ISO Class 7				352000	83200	2930
ISO Class 8				3520000	832000	29300
ISO Class 9				35200000	8320000	293000