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Norm

ÖNORM EN ISO 14644-1

Issue date: 1999 08 01

Cleanrooms and associated controlled environments - Part 1: Classification of air cleanliness (ISO 14644-1:1999)

This part of ISO 14644 covers the classification of air cleanliness in cleanrooms and associated controlled environments exclusively in terms of concentration of airborne...
Withdrawn: 2016 05 15
Publisher:
Austrian Standards International
Format:
Digital | 28 Pages
Language:
German | English | Download GER/ENG
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 an threshold (lower limit) sizes ranging from 0,1 p.m to 5 gm are considered for classification purposes. This part of ISO 14644 does not provide for classification of particle populations that are outside of the specified particle size range, 0,1 .tm to 5 µm. Concentrations of ultrafine particles (particles smaller than 0,1 µm) and macroparticles (particles largerthan 5 µm) may be used to quantify these populations in terms of U descriptors and M descriptors, respectively. This part of ISO 14644 cannot be used to characterize the physical, chemical, radiological, or viable nature of airborne particles. NOTE The actual distribution of particle concentrations within incremental size ranges normally is not predictable and typically is variable over time.
ÖNORM EN ISO 14644-1
2016 05 15
Cleanrooms and associated controlled environments - Part 1: Classification of air cleanliness by par...
Norm
ÖNORM EN ISO 14644-1
1999 08 01
Cleanrooms and associated controlled environments - Part 1: Classification of air cleanliness (ISO 1...
Norm
Norm
ÖNORM EN ISO 14644-1
Issue date : 2016 05 15
Cleanrooms and associated controlled environments - Part 1: Classification of air cleanliness by particle concentration (ISO 14644-1:2015)
Norm
ISO 14644-1:1999
Issue date : 1999 05 06
Cleanrooms and associated controlled environments — Part 1: Classification of air cleanliness