ISO 21501-2:2019 粒径分布测定 单粒子光相互作用法 第2部分：光散射式液体载体粒子计数器

标准编号：ISO 21501-2:2019

中文名称：粒径分布测定 单粒子光相互作用法 第2部分：光散射式液体载体粒子计数器

英文名称：Determination of particle size distribution — Single particle light interaction methods — Part 2: Light scattering liquid-borne particle counter

发布日期：2019-11

标准范围

本文件描述了光散射液载颗粒计数器（LSLPC）的校准和验证方法，该计数器用于测量悬浮在液体中的颗粒的尺寸和颗粒数浓度。本文中描述的光散射方法基于单粒子测量。用这种方法测量的颗粒的典型尺寸范围在0.1μm到10μm之间。该方法适用于用于评估纯水和化学品清洁度的仪器，以及测量各种液体中颗粒的数量和尺寸分布的仪器。使用LSLPC测量的颗粒大小取决于颗粒和介质的折射率；因此，测得的颗粒大小相当于纯水中的校准颗粒。以下内容属于本文件的范围:-尺寸设置错误；-计数效率；-尺寸分辨率；-错误计数；-最大颗粒数浓度；-采样流量误差；-采样时间误差；-采样体积误差；-校准间隔；-报告测试和校准结果。

This document 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 this document 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.The method is applicable to instruments 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 this document:— size setting error;— counting efficiency;— size resolution;— false count;— maximum particle number concentration;— sampling flow rate error;— sampling time error;— sampling volume error;— calibration interval;— reporting results from test and calibration.

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