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ISO 10390:2021

Soil, treated biowaste and sludge – Determination of pH

General information
Valid from 06.04.2021
Directives or regulations
None
Standard history
Status
Date
Type
Name
06.04.2021
Main
21.02.2005
Main
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.
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