Reference number
ISO 21501-4:2018
International Standard
ISO 21501-4:2018
Determination of particle size distribution — Single particle light interaction methods — Part 4: Light scattering airborne particle counter for clean spaces
Edition 2
2018-05
Read sample
ISO 21501-4:2018
58073
Published (Edition 2, 2018)
This publication was last reviewed and confirmed in 2023. Therefore this version remains current.
This standard has 1 amendment.

ISO 21501-4:2018

ISO 21501-4:2018
58073
Language
Format
CHF 129
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Abstract

This document describes a calibration and verification method for a light scattering airborne particle counter (LSAPC), which is used to measure the size distribution and particle number concentration of particles suspended in air. The light scattering method described in this document is based on single particle measurements. The typical size range of particles measured by this method is between 0,1 μm and 10 μm in particle size.

Instruments that conform to this document are used for the classification of air cleanliness in cleanrooms and associated controlled environments in accordance with ISO 14644‑1 and ISO 14644‑2, as well as the measurement of number and size distribution of particles in various environments.

The following parameters are within the scope of this document:

— size setting error;

— counting efficiency;

— size resolution;

— false count;

— maximum particle number concentration;

— sampling flow rate error;

— sampling time error;

— response rate;

— calibration interval;

— reporting results from test and calibration.

General information

  •  : Published
     : 2018-05
    : International Standard confirmed [90.93]
  •  : 2
     : 25
  • ISO/TC 24/SC 4
    19.120 
  • RSS updates

 Amendments

Amendments are issued when it is found that new material may need to be added to an existing standardization document. They may also include editorial or technical corrections to be applied to the existing document.

Amendment 1

Edition 2023

ISO 21501-4:2018/Amd 1:2023
80991
Language
Format
CHF 18
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