纯水系统

实验室纯水的分类与标准：
国家实验室纯水标准(GB/T 6682)依据水的纯度(水的导电性)分1、2、3级，1级电导率小于0.1μs/cm;2级电导率小于1.0μs/cm;3级电导率小于5.0μs/cm;

依据实验室水质用途分为三种级别：
国家实验室纯水标准(GB/T 6682)依据水的纯度(水的导电性)分1、2、3级，1级电导率小于0.1μs/cm;2级电导率小于1.0μs/cm;3级电导率小于5.0μs/cm;


The classification and standard of laboratory pure water: The National Laboratory pure water standard GB / t 6682 divides into 1,2,3 grades according to the water's pure conductivity, the first grade conductivity is less than 0.1 s / cm, the second grade conductivity is less than 1.0 s / cm; The conductivity of grade 3 is less than 5.0 s / cm, and is divided into three grades according to the use of laboratory water: National Laboratory pure water standard GB / t 6682 is divided into 1,2 and 3 grades according to the conductivity of pure water The first order conductivity is less than 0.1 s / cm, the second order conductivity is less than 1.0 s / cm, and the third order conductivity is less than 5.0 s / cm