oSIST prEN ISO 11461:2026

SLOVENSKI STANDARD
01-oktober-2026
Kakovost tal - Določanje količine vode kot prostorninskega deleža z uporabo
cilindrov - Gravimetrijska metoda (ISO/DIS 11461:2026)
Soil quality - Determination of soil water content as a volume fraction using coring
sleeves - Gravimetric method (ISO/DIS 11461:2026)
Bodenqualität - Bestimmung des Wassergehalts des Bodens als Volumenanteil mit Hilfe
von Bohrhülsen - Gravimetrisches Verfahren (ISO/DIS 11461:2026)
Qualité du sol - Détermination de la teneur en eau du sol en fraction volumique, à l'aide
de carottiers - Méthode gravimétrique (ISO/DIS 11461:2026)
Ta slovenski standard je istoveten z: prEN ISO 11461
ICS:
13.080.40 Hidrološke lastnosti tal Hydrological properties of
soils
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
International
Standard
ISO/DIS 11461
ISO/TC 190/SC 3
Soil quality — Determination of soil
Secretariat: DIN
water content as a volume fraction
Voting begins on:
using coring sleeves — Gravimetric
2026-08-17
method
Voting terminates on:
2026-11-09
Qualité du sol — Détermination de la teneur en eau du sol
en fraction volumique, à l'aide de carottiers — Méthode
gravimétrique
ICS: 13.080.40
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 has not been edited by the ISO Central Secretariat.
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NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
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Reference number
ISO/DIS 11461:2026(en)
DRAFT
ISO/DIS 11461:2026(en)
International
Standard
ISO/DIS 11461
ISO/TC 190/SC 3
Soil quality — Determination of soil
Secretariat: DIN
water content as a volume fraction
Voting begins on:
using coring sleeves — Gravimetric
method
Voting terminates on:
Qualité du sol — Détermination de la teneur en eau du sol
en fraction volumique, à l'aide de carottiers — Méthode
gravimétrique
ICS: 13.080.40
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 has not been edited by the ISO Central Secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2026
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
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
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WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
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Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 11461:2026(en)
ii
ISO/DIS 11461:2026(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 1
5 Principle . 2
6 Apparatus . 2
7 Field sampling . 2
7.1 General .2
7.2 Sampling procedure .2
8 Procedure . 3
9 Calculation of volumetric water content . 3
10 Accuracy and reproducibility . 4
10.1 Scope of the error assessment .4
10.2 Errors due to sampling and sample preparation .4
10.2.1 General .4
10.2.2 Random sampling errors .4
10.2.3 Systematic sampling errors .4
10.3 Measurement uncertainty of the laboratory determination .4
10.3.1 General .4
10.3.2 Random measurement errors .5
10.3.3 Systematic errors of the laboratory determination .5
10.4 Temperature dependence of water density .5
10.5 Overall uncertainty .6
11 Test report . 6

iii
ISO/DIS 11461:2026(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 document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO [had/had not] received notice of
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this may not represent the latest information, which may be obtained from the patent database available at
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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 11461:2001), which has been technically
revised.
The main changes are as follows:
— document editorial 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
DRAFT International Standard ISO/DIS 11461:2026(en)
Soil quality — Determination of soil water content as a
volume fraction using coring sleeves — Gravimetric method
1 Scope
This document specifies a method for the gravimetric determination of soil water content as a volume
fraction.
The method is applicable to all types of non-swelling or non-shrinking soils where coring sleeves can be
used for sampling. It is not applicable to soils where stones, tough roots or other factors prevent collection
of soil cores. It is used as a reference method (e.g. the calibration of indirect methods for determination of
water content).
NOTE The determination of water content as a mass fraction is described in ISO 11465.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at http:// www .iso .org/ obp
3.1
volumetri
...