SIST EN ISO 11465:2026
(Main)Sludge and solid environmental matrices - Determination of dry residue or water content and calculation of the dry matter fraction on a mass basis (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 (ISO 11465:2025)
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.
Schlamm und feste Umweltmatrizes - Bestimmung des Trockenrückstands oder des Wassergehalts und Berechnung des Trockenmassenanteils auf Grundlage der Masse (ISO 11465:2025)
Dieses Dokument legt Verfahren zur Berechnung des Trockenmassenanteils von Schlamm, Schlammprodukten, behandeltem Bioabfall, Boden und Abfall fest, bei denen die Ergebnisse der durchgeführten Analyse auf wasserfreier Bezugsbasis zu berechnen sind. In Abhängigkeit von Beschaffenheit und Herkunft der Probe basiert die Berechnung auf der Bestimmung des Trockenrückstands (Verfahren A) oder des Wassergehalt s (Verfahren A und B). Das Dokument gilt für Proben mit einem Trockenrückstand oder einem Wassergehalt von mehr als 1 % (Massenanteil).
Verfahren A ist anwendbar auf Schlamm, Schlammprodukte, behandelten Bioabfall, Boden und feste Abfälle. Verfahren B ist anwendbar auf flüssige Abfälle und auf Proben, die vermutlich oder nachweislich flüchtige Stoffe, mit Ausnahme von Wasser, enthalten.
WARNUNG — Die Anwender dieses Dokuments sollten mit der üblichen Laborpraxis vertraut sein. Dieses Dokument erhebt nicht den Anspruch, auf alle gegebenenfalls zutreffenden Sicherheitsfragen im Zusammenhang mit seiner Anwendung einzugehen. Es liegt in der Verantwortung des Anwenders, geeignete Maßnahmen für den Arbeits- und Gesundheitsschutz zu treffen und die Einhaltung nationaler Vorschriften sicherzustellen.
WICHTIG — Es ist unerlässlich, dass nach diesem Dokument durchgeführte Untersuchungen von entsprechend ausgebildetem Personal durchgeführt werden.
Boues et matrices environnementales solides - Détermination de la teneur en résidu sec ou en eau et calcul de la fraction massique de matière sèche (ISO 11465:2025)
Le présent document spécifie les méthodes de calcul de la fraction de matière sèche dans les boues, produits issus des boues, biodéchets traités, sols et déchets pour lesquels les résultats des analyses effectuées sont calculés par rapport à la matière sèche. Selon la nature et l’origine de l’échantillon, le calcul repose sur la détermination de la teneur en résidu sec (méthode A) ou sur la détermination de la teneur en eau (méthodes A et B). Il s’applique aux échantillons contenant plus de 1 % (fraction massique) de résidu sec ou plus de 1 % (fraction massique) d’eau.
La méthode A s’applique aux boues, produits issus des boues, biodéchets traités, sols et déchets solides. La méthode B s’applique aux déchets liquides et aux échantillons suspectés contenir ou connus pour contenir des substances volatiles, à l’exclusion de l’eau.
Blato in trdni matriksi v okolju - Določanje suhega ostanka ali vsebnosti vode in izračun suhe snovi na podlagi mase (ISO/FDIS 11465:2025)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN ISO 11465:2024
01-oktober-2024
Blato, obdelani biološki odpadki, tla in odpadki - Določanje suhega ostanka ali
vsebnosti vode in izračun suhe snovi na podlagi mase (ISO/DIS 11465:2024)
Sludge, treated biowaste, soil and waste - Determination of dry residue or water content
and calculation of the dry matter fraction on a mass basis (ISO/DIS 11465:2024)
Schlamm, behandelter Bioabfall, Boden und Abfall - Bestimmung des Trockenrückstands
oder des Wassergehalts und Berechnung des Trockenmassenanteils auf Grundlage der
Masse (ISO/DIS 11465:2024)
Boues, biodéchets traités, sols et déchets - Détermination de la teneur en résidu sec ou
en eau et calcul de la fraction massique de matière sèche (ISO/DIS 11465:2024)
Ta slovenski standard je istoveten z: prEN ISO 11465
ICS:
13.080.20 Fizikalne lastnosti tal Physical properties of soils
oSIST prEN ISO 11465:2024 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
oSIST prEN ISO 11465:2024
oSIST prEN ISO 11465:2024
DRAFT
International
Standard
ISO/DIS 11465
ISO/TC 190/SC 3
Sludge, treated biowaste, soil
Secretariat: DIN
and waste — Determination of
Voting begins on:
dry residue or water content
2024-08-14
and calculation of the dry matter
Voting terminates on:
fraction on a mass basis
2024-11-06
ICS: 13.080.20
THIS DOCUMENT IS A DRAFT CIRCULATED
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Reference number
ISO/DIS 11465:2024(en)
oSIST prEN ISO 11465:2024
DRAFT
ISO/DIS 11465:2024(en)
International
Standard
ISO/DIS 11465
ISO/TC 190/SC 3
Sludge, treated biowaste, soil
Secretariat: DIN
and waste — Determination of
Voting begins on:
dry residue or water content
and calculation of the dry matter
Voting terminates on:
fraction on a mass basis
ICS: 13.080.20
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2024
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland Reference number
ISO/DIS 11465:2024(en)
ii
oSIST prEN ISO 11465:2024
ISO/DIS 11465:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
4.1 General .1
4.2 Principle of Method A — Drying at 105 °C (dry residue) .2
4.3 Principle of Method B — Direct Karl Fischer titration (water content) .2
5 Sample preparation . 2
6 Method A — Drying at 105 °C . 2
6.1 General .2
6.2 Interferences .2
6.3 Hazards .2
6.4 Apparatus .2
6.5 Procedure .3
7 Expression of results (method A) . 3
7.1 Calculation of dry residue . .3
7.2 Calculation of water content .4
7.2.1 General .4
7.2.2 Calculation of water content on a field moist basis .4
7.2.3 Calculation of water content on a dry residue basis .4
8 Method B — Direct Karl-Fischer-titration (volumetric/coulometric detection) . 5
8.1 Interferences .5
8.2 Reagents .5
8.3 Apparatus .5
8.4 Procedure .6
8.4.1 Determination of the equivalence factor .6
8.4.2 Analysis of liquid samples .6
8.4.3 Expression of results .6
8.4.4 Analysis of solid samples .6
8.4.5 Expression of results .7
8.4.6 Calculation of dry matter fraction .7
9 Precision . 7
10 Test report . 7
Annex A (informative) Repeatability and reproducibility . 9
Annex B (informative) Summary of general requirements and recommendations .13
Bibliography . 14
iii
oSIST prEN ISO 11465:2024
ISO/DIS 11465:2024(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO documents should be noted (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent
rights identified during the development of the document will be in the Introduction and/or on the ISO list of
patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 190, Soil quality, Subcommittee SC 3, Chemical
and physical characterization
This second edition cancels and replaces the first edition (ISO 11465:1993 + Technical Correction:1994),
which has been technically revised.
The main changes compared to the previous edition are as follows:
— content was merged with the content of EN 12880 where appropriate;
— content was merged with the content of EN 15934 where appropriate;
— deletion of the informative Annex “Azeotropic distillation with toluene”;
— editorially revised.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
oSIST prEN ISO 11465:2024
ISO/DIS 11465:2024(en)
Introduction
In case of analysis of solids and sludge water is usually not considered as part of the sample and results are
generally related to dry matter, which can be calculated by determination of the dry residue (dry matter
fraction). For this purpose, and for the determination of the water content, two methods are described in
this document. The choice of the method depends on the type of sample and its content of volatile substances
excluding water.
As a result of the validation study, the determination of water content by azeotropic distillation has been
replaced by Karl-Fischer-titration. Nevertheless, the distillation may be useful in certain cases. This method
is described in Annex B (informative).
This document is applicable and validated for several types of matrices as indicated in Table 1 (see also
Annex A for the results of the validation).
Table 1 — Matrices for which this document is applicable and validated
Matrix Materials used for validation
Sludge (only method A) Municipal sludge
Biowaste (only method A) Fresh compost
Soil (only method A) Sludge amended soil
Waste (method A and B) Contaminated soil,
Dredged sludge,
Nickel sludge,
Filter cake,
Distillation residue,
Drilling emulsion
WARNING — Persons using this document should be familiar with usual laboratory practice. This
document does not purport to address all of the safety problems, if any, associated with its use. It
is the responsibility of the user to establish appropriate safety and health practices and to ensure
compliance with any national regulatory conditions.
IMPORTANT — It is essential that tests conducted according to this document be carried out by
suitably qualified staff.
v
oSIST prEN ISO 11465:2024
oSIST prEN ISO 11465:2024
DRAFT International Standard ISO/DIS 11465:2024(en)
Sludge, treated biowaste, soil and waste — Determination of
dry residue or water content and calculation of the dry matter
fraction on a mass basis
1 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 to be 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 (Method A & 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.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
dry residue
remaining mass fraction of a sample after a drying process at 105 °C under specified conditions
3.2
water content
mass fraction of water in a sample determined by the method after drying at 105 °C or by Karl-Fischer-
titration under specified conditions
3.3
dry matter fraction
mass fraction of a sample minus its water content
4 Principle
4.1 General
Depending on the origin (sludge, biowaste, soil, waste) and the nature of the sample (liquid, solid or
multiphase) either the water content or the dry residue is to be determined. The results from the
determination of water content or dry residue are used to calculate the dry matter fraction. In case of
oSIST prEN ISO 11465:2024
ISO/DIS 11465:2024(en)
multiphase (waste) samples these samples shall be homogenized. If homogenization is not possible, a phase
separation according to e.g. EN 15002 can be applicable and the phases are analysed separately.
4.2 Principle of Method A — Drying at 105 °C (dry residue)
The sample is dried to a constant mass at 105 °C. This method applies to solid samples and samples which
become solid during the drying process. The method generally applies to soil, sludge, sludge products and
treated biowaste. Solid samples containing amounts of volatiles which are expected to affect the results
shall be analysed by Method B.
4.3 Principle of Method B — Direct Karl Fischer titration (water content)
The method usually applies to liquid samples and homogenised multiphase samples. It can also be used for
solid samples in case the “water content” is of interest and in case volatiles are expected to interfere with the
determination according to Method A. The water content of a sample is determined by direct Karl-Fischer-
titration and either volumetric or coulometric detection. Liquid samples are directly added to the cell, while
solid samples are extracted by use of methanol.
5 Sample preparation
Pretreat the samples according to e.g. ISO 11464, EN 16179 or EN 15002 as appropriate, if not otherwise
specified.
6 Method A — Drying at 105 °C
6.1 General
When performing any kind of analysis on samples, the dry matter fraction shall be determined simultaneously
on identical test portions, in order to base all other test results on the determined dry matter content of each
individual sample.
6.2 Interferences
The samples can change during storing and the drying process, e.g. by absorption of carbon dioxide in the
case of alkaline samples, or of oxygen by reducing substances. Volatile compounds evaporating at 105 °C are
measured as water using this procedure.
NOTE 1 For alkaline samples or samples susceptible to oxidation the drying can be carried out in a nitrogen
atmosphere.
NOTE 2 In the case of sludges containing considerable amounts of water it is expedient to evaporate the greater
part of the water carefully on a water bath in order to avoid loss of substances by splashing.
6.3 Hazards
Flammable or explosive gases may be released in the drying process.
Sludge samples are liable to ferment and usually contain harmful micro-organisms. Storage containers can
burst and produce a hazardous spray and aerosol. If sludge samples are t
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