本文件规定了在1:5（体积分数）的土壤、污泥和处理过的生物废物悬浮液中，在1 mol/l氯化钾溶液（pH？in？KCl）或0.01 mol/l氯化钙溶液（pH？in？CaCl2）中，使用玻璃电极常规测定pH值在pH？2至pH？12范围内的仪器方法。 本文件适用于所有类型的风干土壤和经过处理的生物废物样品。 注？例如，根据ISO？11464或EN？16179或EN？15002进行预处理。

This document specifies an instrumental method for the routine determination of pH within the range pH？2 to pH？12 using a glass electrode in a 1:5 (volume fraction) suspension of soil, sludge and treated biowaste in either water (pH？in H2O), in 1？mol/l potassium chloride solution (pH？in？KCl) or in 0,01？mol/l calcium chloride solution (pH？in CaCl2). This document is applicable to all types of air-dried soil and treated biowaste samples. NOTE？For example, pretreated in accordance with ISO？11464 or EN？16179 or EN？15002.