Design & Construction

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Project Design

Grading 

Pharmaceutical clean room air cleanliness class table

Cleanliness level Maximum allowable number of suspended particles/m3
Static Dynamic
≥0.5μm ≥5.0μm ≥0.5μm ≥5.0μm
Grade A 3520 20 3520 20
B Grade 3520 29 352000  2900
C Grade 352000 2900 3520000 29000
D Grade 3520000 29000 No provision No provision

 

Sterile medical appliance clean room air cleanliness class table 

Cleanliness level Maximum allowable number of dust particles, pcs/m³ Maximum allowable number of microorganisms
≥0.5μm ≥5.0μm Settling bacteria, pcs/dish Planktonic bacteria,pcs/m3
Level 100 3500 0 1 5
Level 10000 350000 2000 3  100
100000 level 3500000 20000 10 500
300000 level 10500000 ≤60000 15 --

 

Food industry clean room air cleanliness class table 

Class of clean room Maximum allowable number of suspended particles/m³
Static Dynamic
≥0.5μm ≥5.0μm ≥0.5μm ≥5.0μm
Grade I 3520 29 35200 293
Grade II 352000 2930 3520000 29300
Grade III 3520000 29300 No provision No provision
Grade IV 35200000 293000 No provision No provision

 

Air cleanliness class table for electronic industry and other clean rooms

Air cleanliness class (N) Greater than or equal to the maximum concentration limit of the required particle size (pc/m³)
0.1μm 0.2μm 0.3μm 0.5μm 1μm 5μm
1 10 2 -- -- -- --
2 100 24 10 4 -- --
3 1000 237 102 35 8 --
4 10000 2370 1020 352 83 --
5 100000 23700 10200 3520 832 29
6 1000000 237000 102000 35200 8320 293
7 -- -- -- 352000 83200 29300
8 -- -- -- 3520000 832000 29300
9 -- -- -- 35200000 8320000 293000

Note: According to different measurement methods, the effective digits of the concentration data of each level should not exceed 3 digits.