标准编号：ISO 21501-1:2009
中文名称：粒径分布的测定 单粒子光交互作用法 第1部分：光散射气溶胶粒径谱仪
英文名称：Determination of particle size distribution — Single particle light interaction methods — Part 1: Light scattering aerosol spectrometer
发布日期：2009-06
标准范围
This part of ISO 21501 specifies characteristics of a light scattering aerosol spectrometer (LSAS) which isused for measuring the size, number concentration and number/size distribution of particles suspended in agas. The light scattering technique described in this part of ISO 21501 is based upon single particlemeasurements. The size range of particles measured by this method is between approximately 0,06 μm to45 μm in diameter.Instruments that conform to this part pf ISO 21501 are used for the determination of the particle sizedistribution 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 instreet 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 aerosolspectrometers are not suitable for the classification of clean rooms.
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