1 Scope
This document establishes typical assessment processes to determine grading levels
of
air chemical cleanliness (ACC) in cleanrooms and associated
controlled environments, in terms of airborne concentrations of specific chemical
substances (individual, group or category), and provides a protocol to include test
methods, analysis and time-weighted factors for their determination. This document
currently considers only concentrations of air chemical contaminants between
100 g/m3 and 10−12 g/ m3 under
cleanroom operational conditions.
This document is not relevant for application in those industries, processes or
productions where the presence of airborne chemical substances is not considered a
risk to the product or process.
It is not the intention of this document to describe the nature of air chemical
contaminants.
This document does not give a classification of surface chemical contamination.