in Pharmacy by (5.9k points)

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by (2.3k points)

The international organization of standardization designed the clean room classification as follow. This below table explaines the number of particles per M3

 

ISO class

≥ 0.5 µm

≥5.0 µm

ISO 1

0.35

0.0029

ISO 2

3.5

0.029

ISO 3

35

0.29

ISO 4

352

2.9

ISO 5

3520

29

ISO 6

35200

290

ISO 7

352000

2900

ISO 8

3520000

29000

ISO 9

35200000

290000

 

by (1.3k points)

ISO

CLASS

MAXIMUM PARTCLES/ Ft3

≥ 0.1 µm

≥0.2 µm

≥ 0.3 µm

≥ 0.5 µm

≥ 5 µm

ISO-1

0.01

0.35

0.075

0.03

0.01

0.00007

ISO-2

0.1

3.5

0.75

0.3

0.1

0.0007

ISO-3

1

35

7.5

3

1

0.007

ISO-4

10

350

75

30

10

0.07

ISO-5

100

3500

750

300

100

0.7

ISO-6

1000

35000

7500

3000

1000

7

ISO-7

10000

350000

75000

30000

10000

70

ISO-8

100000

3500000

750000

300000

100000

700

...