STB 17.13.05-39-2015
環境污染防治和自然利用 環境的分析(實驗室)控制和監測 水質 硝酸銀滴定法測定氯化物濃度
Еnvironmental pгоtесtion аnd nature use. Analytic (laboratory) control and monitoring of the environment. Water quality. Determination of the concentration of chlorides by titration method with silver nitrate