一、规程制定背景动态光散射粒度分析仪(DLS)是一种用于测量分散于液体中纳米/亚微米颗粒粒径及粒径分布的常规分析仪器,所适用的颗粒粒径范围从几纳米至大约1微米或至颗粒开始沉降时的粒径。该技术已广泛应用于生物制药、材料、航空航天、微电子、纺织工业、机械制造等众多领域,其测量结果的准确性关系上述领域的技术及产品发展,如:在纳米器件加工生产中,动态光散射法测量结果的准确性、可比性对纳米器件的设计和构 First, the rules and regulations Background Dynamic Light Scattering Particle Size Analyzer (DLS) is used to measure the dispersion of nano / submicron particles dispersed in the liquid particle size and particle size distribution of conventional analytical instruments, the particle size range of particles from a few nanometers To about 1 micron or to the particle size at which the particles begin to settle. The technology has been widely used in many fields such as biopharmaceuticals, materials, aerospace, microelectronics, textile industry, machinery manufacturing and other fields. The accuracy of measurement results is related to the development of technologies and products in the above fields. For example, in the processing of nano devices, The Accuracy and Comparability of the Measurement Results of Dynamic Light Scattering Method for the Design and Fabrication of Nanodevices