BS PD ISO/TS 21231:2019规定了适用于性能测定的代表性材料 在定量方法的初始评估期间，用于 实验室，用于物理化学水分析。交叉引用:ISO 6107（所有部分）ISO 5667-3ISO/TS 16489:2006ISO 5725-1:1994ISO指南35:2017ISO/TS 13530:2009ASTM D5905-98（2013）ISO 11352EN 12457（系列）ISO指南80ISO 17034ASTM D1141-98（2013）ISO 3696购买本文件时提供的所有当前修改件均包括在内。

BS PD ISO/TS 21231:2019 specifies representative materials suitable for the determination of the performance characteristics, including uncertainty, during the initial assessment of a quantitative method, used in a laboratory, for physico-chemical water analysis.Cross References:ISO 6107 (all parts)ISO 5667-3ISO/TS 16489:2006ISO 5725-1:1994ISO Guide 35:2017ISO/TS 13530:2009ASTM D5905-98(2013)ISO 11352EN 12457 (series)ISO Guide 80ISO 17034ASTM D1141-98(2013)ISO 3696All current amendments available at time of purchase are included with the purchase of this document.