ISO 21501-2:2007
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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Determination of particle size distribution Single particle light interaction methods Part 2: Light scattering liquid-borne particle counter
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
23-11-2019
English
07-05-2007
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ISO 21501-2:2007 describes a calibration and verification method for a light scattering liquid-borne particle counter (LSLPC), which is used to measure the size and particle number concentration of particles suspended in liquid. The light scattering method described in ISO 21501-2:2007 is based on single particle measurements. The typical size range of particles measured by this method is between 0,1 m and 10 m in particle size.
Instruments that conform to ISO 21501-2:2007 are used for the evaluation of the cleanliness of pure water and chemicals, as well as the measurement of number and size distribution of particles in various liquids. The measured particle size using the LSLPC depends on the refractive index of particles and medium; therefore the measured particle size is equivalent to the calibration particles in pure water.
The following are within the scope of ISO 21501-2:2007:
- size calibration;
- verification of size setting;
- counting efficiency;
- size resolution;
- false count rate;
- maximum particle number concentration;
- sampling flow rate;
- sampling time;
- sampling volume;
- calibration interval;
- test report.
| DevelopmentNote |
Supersedes ISO/DIS 21501-2. Together with ISO 21501-3 and ISO 21501-4, supersedes ISO 13323-1. (05/2007)
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| DocumentType |
Standard
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| Pages |
15
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| PublisherName |
International Organization for Standardization
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| Status |
Withdrawn
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| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| NEN ISO 21501-2 : 2007 | Identical |
| BS ISO 21501-2:2007 | Identical |
| SAC GB/T 29024.2 : 2016 | Identical |
| DD ISO/TS 12805:2011 | Nanotechnologies. Materials specifications. Guidance on specifying nano-objects |
| BS ISO 26824:2013 | Particle characterization of particulate systems. Vocabulary |
| ISO 26824:2013 | Particle characterization of particulate systems — Vocabulary |
| ISO/TS 12805:2011 | Nanotechnologies — Materials specifications — Guidance on specifying nano-objects |
| ISO 9276-1:1998 | Representation of results of particle size analysis — Part 1: Graphical representation |
| ASTM F 328 : 1998 | Standard Practice for Calibration of an Airborne Particle Counter Using Monodisperse Spherical Particles |
| ASTM F 649 : 2001 | Standard Practice for Secondary Calibration of Airborne Particle Counter Using Comparison Procedures (Withdrawn 2007) |
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