NAC639.6643. “ISO Class 7” defined.  


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  • “ISO Class 7” means the classification of an atmospheric environment that is made by the International Organization for Standardization based on an adaptation of Federal Standard 209E, as adopted by reference in paragraph (a) of subsection 1 of NAC 639.670, in which the atmospheric environment contains:

         1. Less than 352,000 particles that are 0.5 micron or larger in diameter per cubic meter of air; or

         2. Less than 10,000 particles that are 0.5 micron or larger in diameter per cubic foot of air.

     (Added to NAC by Bd. of Pharmacy by R035-06, eff. 9-18-2008)