电解质电导率国家计量基准由国家标准物质研究中心建立，于1984年通过了成果鉴定，1986年由原国家计量局批准为国家计量基准。其工作原理是：首先制取一种高纯度氯化钾作为一级标准物质，其主体含量为9999％c利用国际公认的25℃下各浓度的电导率为起始点，测出万℃下电导地常数 National standards for the measurement of electrolyte conductivity were established by the National Research Center for Reference Materials and passed the appraisal of achievements in 1984. In 1986, it was approved by the former National Bureau of Metrology as the national measurement standard. Its working principle is: first, to prepare a high purity potassium chloride as a standard material, the main content of 9999% c using the internationally accepted concentration of 25 ℃ under the conductivity as a starting point to measure the conductivity Constant