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EVS-EN ISO 14644-1:2015

Cleanrooms and associated controlled environments - Part 1: Classification of air cleanliness by particle concentration (ISO 14644-1:2015)

General information
Valid from 05.01.2016
Base Documents
EN ISO 14644-1:2015; ISO 14644-1:2015
Directives or regulations
None
Standard history
Status
Date
Type
Name
05.01.2016
Main
01.01.2000
Main
This part of ISO 14644 covers the classification of air cleanliness in cleanrooms and associated controlled environments exclusively in terms of concentration of airborne particles. Only particle populations having cumulative distributions based on threshold (lower limit) particle sizes ranging from 0,1 μm to 5 μm are considered for classification purposes. The use of discrete-particle airborne counting and sizing instruments is the basis for determination of the concentration of airborne particles, equal to and greater than the specified sizes, at designated sampling locations. This part of ISO 14644 does not provide for classification of particle populations that are outside of the specified particle-size range, 0,1 μm to 5 μm. Concentrations of ultrafine particles (particles smaller than 0,1 μm) and macroparticles (particles larger than 5 μm) may be used to quantify these populations in terms of U descriptors and M descriptors (see 3.3.1 and 3.3.2), respectively. This part of ISO 14644 cannot be used to characterise the physical, chemical, radiological or viable nature of airborne particles.
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