ISO 21501-1-2009
粒径分布测定.单粒子光干扰法.第1部分:光散射气溶胶谱仪

Determination of particle size distribution - Single particle light interaction methods - Part 1: Light scattering aerosol spectrometer

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标准号

ISO 21501-1-2009

发布日期

2009年06月01日

实施日期

废止日期

无

中国标准分类号

A42

国际标准分类号

19.120

发布单位

IX-ISO

被代替标准

ISO/FDIS 21501-1-2009

适用范围

This part of ISO 21501 specifies characteristics of a light scattering aerosol spectrometer (LSAS) which is used for measuring the size, number concentration and number/size distribution of particles suspended in a gas. The light scattering technique described in this part of ISO 21501 is based upon single particle measurements. The size range of particles measured by this method is between approximately 0,06 μm to 45 μm in diameter. Instruments that conform to this part pf ISO 21501 are used for the determination of the particle size distribution and particle number concentration at relatively high concentrations of up to 1011 particles/m3. Application fields include: ⎯ characterization of metered dose inhalers (MDI), dry powder inhalers (DPI) and nebulizers in pharmacy; ⎯ production control of active agents; ⎯ cut-off determination: impactors, cyclones and impingers; ⎯ atmospheric aerosols: bio-aerosols, stables/composting facilities, nebulized droplets, measurements in street tunnels; ⎯ fractional separation efficiency determination of filters. For the above-mentioned applications, aerosol spectrometers should determine the particle size distribution, particle number concentration, size resolution and sizing accuracy as accurately as possible. These aerosol spectrometers are not suitable for the classification of clean rooms.

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