DS/ISO 21501-4:2007 ( Withdrawn )

Determination of particle size distribution - Single particle light interaction methods - Part 4: Light scattering airborne particle counter for clean spaces


Status:
Withdrawn
Type:
Standard
Language:
English
Subject:
Replaced by:
Price from:
€ 61.05

Scope

This International Standard describes the Light-Scattering Airborne Particle Counter (LSAPC), which is used for measuring the size, particle number concentration of particles suspended in air. The light scattering technique described in this standard is based on single particle measurements. The typical size range of particles measured by this method is between 0,1 and 10 mm in diameter. Instruments that meet this standard are used for the classification of air cleanliness in cleanrooms and associated controlled environments according to ISO 14644-1 as well as the measurements of number/size distribution of particles in various environments. This standard contains the following aspects;
1) Size calibration
2) Size setting
3) Counting efficiency
4) Size resolution
5) False count rate
6) Maximum particle number concentration
7) Sampling flow rate
8) Sampling time
9) Response time
10) Calibration Interval
11) Test report

Number of pages: 28

Published: 2007-11-12

Date of approval: 2007-10-15

Date of withdrawal: 2018-05-23

International relationships : ISO 21501-4:2007 IDT

ICS: 13.040.35 - Cleanrooms and associated controlled environments 19.120 - Particle size analysis. Sieving

Item number: M220398


Committees

Committee

  • ISO/TC 24/SC 4/WG 9

Danish committee

DS/S-438