JSA - JIS B 9925
Light scattering liquid-borne particle counter
|Publication Date:||20 May 2010|
|ICS Code (Particle size analysis. Sieving):||19.120|
This Standard describes a calibration and verification method for a light scattering liquid-borne particle counter (hereafter referred to as "particle counter"), which is used to measure the size and number or particle number concentration of particles suspended in liquid. The particle counter specified in this Standard performs single particle measurements, and the typical size range of particles measured by it in the method specified in this Standard is between 0.1 μm and 10 μm in particle size.
NOTE 1 Instruments that conform to this Standard are used for the determination of the cleanliness of pure water and evaluation of cleanliness of chemicals in accordance with JIS K 0230.
NOTE 2 The particle size measured by the particle counter is not the actual particle size-it is the light scattering equivalent diameter of the calibration particles suspended in pure water.
The particle size is a diameter of particle and is also called the particle diameter.
NOTE 3 The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.
ISO 21501-2: 2007 Determination of particle size distribution-Single particle light interaction methods-Part 2: Light scattering liquid-borne particle counter (MOD)
The symbols which denote the degree of correspondence in the contents in the corresponding International Standard and JIS are IDT (identical), MOD (modified) and NEQ (not equivalent) according to ISO/lEC Guide 21-1.