DS/ISO 21501-4:2007
Determination of particle size distribution - Single particle light interaction methods - Part 4: Light scattering airborne particle counter for clean spaces

Standard No.

DS/ISO 21501-4:2007

Release Date

2007

Published By

Danish Standards Foundation

Latest

DS/ISO 21501-4:2007

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 c

DS/ISO 21501-4:2007 history

• 2007 DS/ISO 21501-4:2007 Determination of particle size distribution - Single particle light interaction methods - Part 4: Light scattering airborne particle counter for clean spaces