ISO 13323-1:2000
Determination of particle size distribution - Single-particle light interaction methods - Part 1: Light interaction considerations
- Standard No.
- ISO 13323-1:2000
- Release Date
- 2000
- Published By
- International Organization for Standardization (ISO)
- Status
- Latest
- ISO 13323-1:2000
- Scope
- This part of ISO 13323 provides guidance on the selection and operation of devices that determine the size and number of particles by measuring the phenomena resulting from light interaction with individual particles present in a gas or liquid. The reported particle size is defined as an equivalent optical size based upon the response of the measurement system to calibration particles. This definition requires that the instrument be calibrated with well-defined materials. This part of ISO 13323 applies to particles ranging in size from approximately 0,05 μm in diameter to the millimetre size range. Gas-borne particles in sizes from approximately 0,05 μm to 20 μm or so are measured primarily by light-scattering. Larger particles can be measured using light extinction sensors. Liquid-borne particles in the size range from approximately 0,05 μm to a few micrometres are measured by light-scattering. Light extinction is used to measure liquid-borne particles in sizes from approximately 1 μm to the millimetre size range. The size range capability of any single instrument is usually approximately 100:1. Particles larger than approximately 100 times the size of the smallest particle that can be measured with good sizing resolution are reported as "greater than or equal to the threshold size" of the largest size channel of the instrument. The response that is considered in this part of ISO 13323 is the change in collected light flux resulting from the presence of a single-particle within the optical sensing zone of the measuring instrument. For this reason, instruments, which rely upon optical interaction to produce data only indicating the extent of particle motion, are not discussed here. NOTE Instruments not discussed here include devices such as aerodynamic particle sizers or phase Doppler particle analysers, which produce data primarily dependent upon the aerodynamic size of the particles. Those instrument types do not use the extent of light interaction to measure the particle size. The particle size is defined by residence time during motion through a defined distance or by particle velocity. These instruments report a particle size that is related to fluid-dynamic measurements.
ISO 13323-1:2000 Referenced Document
- ISO 14887 Sample preparation - Dispersing procedures for powders in liquids
- ISO 3165 Sampling of chemical products for industrial use; Safety in sampling
- ISO 6206 Chemical products for industrial use; Sampling; Vocabulary Bilingual edition
ISO 13323-1:2000 history
- 2000 ISO 13323-1:2000 Determination of particle size distribution - Single-particle light interaction methods - Part 1: Light interaction considerations
