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ISO 21501-3:2007

Withdrawn
Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

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withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

Determination of particle size distribution Single particle light interaction methods Part 3: Light extinction liquid-borne particle counter
Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Withdrawn date

25-11-2019

Language(s)

English

Published date

07-05-2007

ISO 21501-3:2007 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 ISO 21501-3:2007 is based on single particle measurements. The typical size range of particles measured by this method is between 1 m and 100 m in particle size.

Instruments that conform to ISO 21501-3:2007 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 ISO 21501-3:2007:

  • size calibration;
  • verification of size setting;
  • counting efficiency;
  • size resolution;
  • maximum particle number concentration;
  • sampling flow rate;
  • sampling time;
  • sampling volume;
  • calibration interval;
  • test report.

DevelopmentNote
Supersedes ISO/DIS 21501-3. Together with ISO 21501-2 and ISO 21501-4, supersedes ISO 13323-1. (05/2007)
DocumentType
Standard
Pages
12
ProductNote
THIS STANDARD ALSO REFERS TOJIS B 9925.
PublisherName
International Organization for Standardization
Status
Withdrawn
SupersededBy
Supersedes

Standards Relationship
BS ISO 21501-3:2007 Identical
NEN ISO 21501-3 : 2007 Identical
SAC GB/T 29024-3 : 2012 Identical

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ISO 9276-1:1998 Representation of results of particle size analysis — Part 1: Graphical representation

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