ISO 14698-2, Cleanrooms and associated controlled environments--Biocontamination control, Part 2: Evaluation and interpretation of biocontamination data became available October 2003.
ISO 14698-2 gives guidance on basic principles and methodological requirements for all microbiological data evaluation, and the estimation of biocontamination data obtained from sampling for viable particles in zones at risk, as specified by the system selected. This is not intended for testing the performance of microbiological counting techniques of determining viable units.