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Frequently Asked Question - Definition of Common Cleanroom Terms
 
Information about Biological Safety
Biological Safety Levels, Biological Spills, Infectious Waste Treatment, Disinfectants, Animal pathogens & etc..

Cleanrooms Related Information
Federal Standard 209E, ISO 14644-1, EUGGMP, ISO 14698 Cleanroom Disciplines, Cleanrooms Entry Exit rule & etc..

Learn About Deadly Cancer Mesothelioma due to Asbestos Exposure, it can affect any one in the world

Representative Upstream Sample  All Terms     Sample Acquisition Time Next Sample Acquisition Time


Representative Upstream Sample

A sample of the aerosol upstream of the filter that is being leak tested. this aerosol sample is used to set the 100% point of a photometer or to calculate values for discrete particle counter scanning. In factory test systems, in field bench test systems, and in unidirectional, clean air devices, a method of obtaining a representative upstream sample should be built into the device by the device menufacturer