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DS/EN ISO 10390:2022

Soil, treated biowaste and sludge - Determination of pH (ISO 10390:2021)

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 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 International Standard is applicable to all types of soil, sludge and biowaste, for example*pretreated in accordance with ISO 11464 or EN 16179.

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