涂料和相关产品前钢基材料的制备 - 表面清洁度评估试验 - 第9部分:水溶性盐电导率测定的现场方法

[中文适用范围]： 本文件规定了在表面处理之前和/或之后通过电导测定评估钢表面上各种水溶性盐的表面密度的现场方法。 盐组合物如氯化物、硫酸盐、钠等的单独表面密度不能通过该方法测定。 该方法仅评估与水接触时形成电解质（离子）的污染物。 这些代表了污染物的大部分。 [外文原描述]： This document specifies a field method for the assessment of the surface density of various water-soluble salts on steel surfaces, before and/or after surface preparation, by conductometric determination. The individual surface densities of the salt composition like chlorides, sulphates, sodium, etc, cannot be determined by this method. This method assesses only contaminants that forms an electrolyte (ions) when in contact with water. These represent the greater part of the contaminants.