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ISO 11465:2025

Sludge and solid environmental matrices — Determination of dry residue or water content and calculation of the dry matter fraction on a mass basis

Aug 28, 2025

General information

60.60     Aug 28, 2025

ISO

ISO/TC 190/SC 3

International Standard

13.080.20  

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Scope

This document specifies methods for the calculation of the dry matter fraction of sludge, sludge products, treated biowaste, soil and waste for which the results of performed analysis are calculated to the dry matter basis. Depending on the nature and origin of the sample, the calculation is based on a determination of the dry residue (method A) or a determination of the water content (methods A and B). It applies to samples containing more than 1 % (mass fraction) of dry residue or more than 1 % (mass fraction) of water.
Method A applies to sludge, sludge products, treated biowaste, soil and solid waste. Method B applies to liquid waste and to samples which are suspected or known to contain volatiles except for water.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 11465:1993

WITHDRAWN
ISO 11465:1993/Cor 1:1994

NOW

PUBLISHED
ISO 11465:2025
60.60 Standard published
Aug 28, 2025

National adoptions

Sludge and solid environmental matrices - Determination of dry residue or water content and calculation of the dry matter fraction on a mass basis (ISO/FDIS 11465)

50.60   Close of voting. Proof returned by secretariat

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