BS ISO 21501-4-2007 粒度分布测定.单粒子光干扰法.无菌空间光散射尘埃粒子计数器

标准号：BS ISO 21501-4-2007
中文标准名称：粒度分布测定.单粒子光干扰法.无菌空间光散射尘埃粒子计数器
英文标准名称：Determination of particle size distribution. Single particle light interaction methods. Light scattering airborne particle counter for clean spaces
标准类型：N33
发布日期：2007/8/31 12:00:00
实施日期：2007/8/31 12:00:00
中国标准分类号：N33
国际标准分类号：19.120
适用范围：ISO 21501-4:2007 describes a calibration and verification method for a light scattering airborne particle counter (LSAPC), which is used to measure the size and particle number concentration of particles suspended in air. The light scattering method described in ISO 21501-4:2007 is based on single particle measurements. The typical size range of particles measured by this method is between 0,1 µm and 10 µm in particle size.Instruments that conform to ISO 21501-4:2007 are used for the classification of air cleanliness in cleanrooms and associated controlled environments in accordance with ISO 14644-1, as well as the measurement of number and size distribution of particles in various environments.The following are within the scope of ISO 21501-4:2007: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.