DOI: 10.36347/sjet

Pages: 45-49

The high quality air without particle must be provided in operating rooms that are known as clean room. Particles cause the risk of infection in clean rooms. But, the infection risk ratio decreases by using a clean-air system. For a perfect clean room, the clean-air system must be controlled by measuring particles and must be classified in according to the international standard. The related standard is, ISO 14644-1:1999(E) Cleanrooms and associated controlled environments Part 1: Classification of air cleanliness. In according to the standard, the clean room is classified from ISO Class 9 to Class 1 by measuring of particles (0,1µm, 0,2µm, 0,3µm, 0,5µm, 1µm, 5µm). The clean room classification requires a scientific study. But, sometimes, the particle measurement, unfortunately, is performed by non-licensed personnel by only controlling of hepa filters instead of standard methods. In this case, the clean room can not be classified. The objective of this study,