Glossary

Class 100,000

02.27.12

Classification of an area where particle count should not exceed 100,000 particles (3,530,000 particles per cubic meter) 0.5µm or larger, per cubic foot of air, and no more than 2.5 CFU (Colony Forming Units) per cubic foot. Minimum of 20 air changes per hour of HEPA filtered air.
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