NF EN ISO 14644-1

NF EN ISO 14644-1

February 2016
Standard Current

Cleanrooms and associated controlled environments - Part 1 : classification of air cleanliness by particle concentration

ISO 14644-1:2015 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.ISO 14644-1:2015 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).ISO 14644-1:2015 cannot be used to characterize the physical, chemical, radiological, viable or other nature of airborne particles.

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Main informations

Collections

National standards and national normative documents

Publication date

February 2016

Number of pages

45 p.

Reference

NF EN ISO 14644-1

ICS Codes

13.040.35   Cleanrooms and associated controlled environments

Classification index

X44-101-1

Print number

1

International kinship

ISO 14644-1:2015

European kinship

EN ISO 14644-1:2015
Sumary
Cleanrooms and associated controlled environments - Part 1 : classification of air cleanliness by particle concentration

ISO 14644-1:2015 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.

ISO 14644-1:2015 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).

ISO 14644-1:2015 cannot be used to characterize the physical, chemical, radiological, viable or other nature of airborne particles.

Replaced standards (1)
NF EN ISO 14644-1
July 1999
Standard Cancelled
Cleanrooms and associated controlled environments. Part 1 : classification of air cleanliness.

Le présent document définit la classification de la propriété particulaire des salles propres et des espaces à empoussièrement maîtrisé pour les trois états d'occupation, "après construction", "au repos" ou "opérationnel". Il mentionne des recommandations quant aux conditions de conformité. Sont données en annexes normatives, d'une part, la détermination de la classification de la propreté particulaire à l'aide d'un compteur de particules et, d'autre part, le traitement statistique des données de concentration particulaire. En outre, des annexes informatives donnent une illustration graphique des classes, des exemples de calcul de la classification des indications sur le comptage et le mesurage des tailles particulaires et une procédure d'échantillonnage séquentiel.

Table of contents
  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Classification
  • 5 Démonstration de conformité
  • Annexe A Méthode de référence pour la classe de propreté particulaire de l'air
  • Annexe B Exemples d'application de calculs de classes
  • Annexe C Comptage et mesurage de macroparticules en suspension dans l'air
  • Annexe D Mode opératoire de prélèvement séquentiel
  • Annexe E Spécification des classes décimales de propreté et des tailles de particules intermédiaires
  • Annexe F Appareils de mesure
  • Bibliographie
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