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BSI BS EN ISO 14644-1:2015

Cleanrooms and associated controlled environments -- Classification of air cleanliness by particle concentration
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BSI BS EN ISO 14644-1:2015

Cleanrooms and associated controlled environments -- Classification of air cleanliness by particle concentration

PUBLISH DATE 2016
PAGES 48
BSI BS EN ISO 14644-1:2015

This part of ISO 14644 specifies the classification of air cleanliness in terms of concentration of airborne particles in cleanrooms and clean zones; and separative devices as defined in ISO 14644-7.

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 light scattering (discrete) airborne particle counters (LSAPC) 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 the specified lower threshold particle-size range, 0,1 µm to 5 µm. Concentrations of ultrafine particles (particles smaller than 0,1 µm) will be addressed in a separate standard to specify air cleanliness by nano-scale particles. An M descriptor (see Annex C) may be used to quantify populations of macroparticles (particles larger than 5 µm).

This part of ISO 14644 cannot be used to characterize the physical, chemical, radiological, viable or other nature of airborne particles.

SDO BSI: British Standards Institution
Document Number ISO 14644-1
Publication Date Jan. 31, 2016
Language en - English
Page Count 48
Revision Level
Supercedes
Committee LBI/30
Publish Date Document Id Type View
Jan. 31, 2016 BS EN ISO 14644-1:2015 Revision
Aug. 15, 1999 BS EN ISO 14644-1:1999 Revision
March 15, 2001 BS EN ISO 14644-1:1999 Consolidated