ISO 8 Clean Room is defined as an area of the community where environmental control is introduced and maintained to carry out clean tasks or other specialized operations which may generate contaminants that could affect the health of those interested in the area. An SO 8 Clean Room is a developed enclosed environment in which microorganisms are at a density controlled to an accepted limit. ISO 8 is not as clean as ISO 5 or ISO 4, however, it is cleaner than other conditions as ISO 5 or ISO 4 means ultra clean areas or clean rooms.

Thousands of Clean Room and class 10,000 clean room difference is mainly cleanliness is different. Clean Room is different, the number of air changes is different. The number of air changes is different, the capacity of dust particles is not the same, the filter dust particles are different, the air volume, hundreds of equipment, the cost is different. Thousands of Clean Rooms level than ten thousand high, so the cost is also high.

A biomedical clean room is a Clean Room where airborne microorganisms are the main object of control. It is mainly used in pharmaceuticals, sterile animal breeding, Hospital Operating Rooms, burn wards, leukemia rooms, food production, and advanced cosmetic production.