Technical Information

Technical Information To TOP

Clean / Precision Air Conditioning / Local Air Conditioning

Series Top

JIS-B-9920

Class representation Class upper value
0.1μm 0.2μm 0.3μm 0.5μm 1μm 5μm
Class 1 10(101) 2        
Class 2 100(102) 24 10 4    
Class 3 1,000(103) 237 102 35 8  
Class 4 10,000(104) 2,370 1,020 352 83  
Class 5 100,000(105) 23,700 10,200 3,520 832 29
Class 6   237,000 102,000 35,200 8,320 293
Class 7       352,000 83,200 2,930
Class 8       3,520,000 832,000 29,300
Class 9       35,200,000 8,320,000 293,000
  • ○ Target volume :1m3
  • ○ Target particle size :0.1μm
  • ○ Class representation :Class 1~Class 8

 

In Japan the cleanliness standards [Japanese Industrial Standards JIS-B 9920 Air cleanliness evaluation methods for Clean room] were established in 1975. Class is divided into sections of Class 1~Class 8 and the standard particle size is considered as 0.1μm. The upper value of presence of floating particles in a space of 1 cubic meter is indicated by 10x units, where x represents the Class.

Since 2002, due to establishment of ISO standards, the application range has increased covering related controlled environment along with clean room.

Product SearchYou can search by series and make

Defined Search