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ISO 10390:2021

Soil, treated biowaste and sludge – Determination of pH ISO 10390:2021

Publication date:   Apr 6, 2021

General information

90.60   Close of review   Sep 3, 2026

ISO

ISO/TC 190/SC 3 Chemical and physical characterization

International Standard

13.080.10   Chemical characteristics of soils

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Scope

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.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 10390:2005

NOW

PUBLISHED
ISO 10390:2021
90.60 Close of review
Sep 3, 2026




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