BS ISO 21501-3:2007 PDF

Determination of particle size distribution. Single particle light interaction methods - Light extinction liquid-borne particle counter

First page of standard BS ISO 21501-3:2007

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Title (English):

BS ISO 21501-3:2007

Determination of particle size distribution. Single particle light interaction methods - Light extinction liquid-borne particle counter

Document status:: Withdrawn
Format:: Electronic (PDF)
Publication date:: August 31, 2007
ICS:: 19.120
SKU:: BS ISO 21501-3:2007

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Abstract

1 Scope This part of ISO 21501 describes a calibration and verification method for a light extinction liquid-borne particle counter (LELPC), which is used to measure the size and particle number concentration of particles suspended in liquid. The light extinction method described in this part of ISO 21501 is based on single particle measurements. The typical size range of particles measured by this method is between 1 µm and 100 µm in particle size. Instruments that conform to this part of ISO 21501 are used for the evaluation of the cleanliness of pharmaceutical products (e.g. injections, water for injections, infusions), as well as the measurement of number and size distribution of particles in various liquids. The following are within the scope of this part of ISO 21501:

— size calibration;

— verification of size setting;

— counting efficiency ;

— size resolution ;

— maximum particle number concentration;

— sampling flow rate;

— sampling time;

Related standards

Mentioned in the description and other BS standards

— size calibration;

— verification of size setting;

— counting efficiency ;

— size resolution ;

— maximum particle number concentration;

— sampling flow rate;

— sampling time;

BS ISO 21501-3:2007 PDF

Abstract

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Abstract

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