SIST EN ISO 10249:2026

Fluid fertilizers - Preliminary visual examination and preparation of samples for physical testing (ISO 10249:2026)

This document specifies both a procedure for preliminary examination of a single sample as received for testing, and a procedure for preparing a test sample by blending and reduction of a series of samples representative of a consignment or a bulk delivery of fluid fertilizer.
NOTE            This document complements the corresponding standard for solid fertilizers (ISO 14820-2).

Flüssige Düngemittel - Visuelle Vorprüfung und Vorbereitung von Proben für physikalische Prüfungen (ISO 10249:2026)

Dieses Dokument legt ein Verfahren zur Vorprüfung einer zur Prüfung übergebenen Einzelprobe im Lieferzustand und ein Verfahren zur Vorbereitung einer Untersuchungsprobe durch Mischen und Reduzieren einer Reihe von repräsentativen Proben aus einem Lieferposten oder einer Lieferung Flüssigdünger fest.
ANMERKUNG   Dieses Dokument ergänzt die entsprechende Norm für feste Düngemittel (ISO 14820 2).

Engrais liquides - Examen visuel préliminaire et préparation des échantillons pour essais physiques (ISO 10249:2026)

Le présent document spécifie à la fois un mode opératoire pour l’examen préliminaire d’un échantillon unique tel qu’il est reçu pour les essais, ainsi qu’un mode opératoire pour la préparation d’un échantillon pour essai par mélange et réduction d’une série d’échantillons représentatifs d’un lot ou d’une livraison en vrac d’engrais liquides.
NOTE            Le présent document complète la norme correspondante relative aux engrais solides (ISO 14820-2).

Tekoča gnojila - Predhodni vizualni pregled in priprava vzorcev za fizikalno preskušanje (ISO 10249:2026)

Ta dokument določa postopek za predhodni pregled posameznega vzorca, kot je prejet za testiranje, in postopek za pripravo testnega vzorca z mešanjem in zmanjšanjem serije vzorcev, ki so reprezentativni za pošiljko ali razsuti tovor tekočega gnojila.
OPOMBA            Ta dokument dopolnjuje ustrezni standard za trdna gnojila (ISO 14820-2).

General Information

• Status: Published
• Public Enquiry End Date: 01-Feb-2026
• Publication Date: 13-May-2026
• ICS: 65.080 - Fertilizers
• Technical Committee: KAT - Soil quality
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 23-Apr-2026
• Due Date: 28-Jun-2026
• Completion Date: 14-May-2026
• Ref Project: EN ISO 10249:2026 - Fluid fertilizers - Preliminary visual examination and preparation of samples for physical testing (ISO 10249:2026)

Relations

• Replaces: SIST EN ISO 10249:2002 - Fluid fertilizers - Preliminary visual examination and preparation of samples for physical testing (ISO 10249:1996)
• Effective Date: 01-Jun-2026

Overview

SIST EN ISO 10249:2026 - Fluid fertilizers – Preliminary visual examination and preparation of samples for physical testing is an internationally recognized standard developed by the European Committee for Standardization (CEN) in collaboration with ISO. This document outlines procedures for the initial examination and preparation of fluid fertilizer samples prior to physical testing. These procedures ensure that the samples are truly representative of a consignment or bulk delivery, supporting consistent and reliable test results. SIST EN ISO 10249:2026 complements the corresponding standard for solid fertilizers (ISO 14820-2), bridging the quality control processes for different types of fertilizers.

Key Topics

• Preliminary Visual Examination
  The standard specifies how to conduct a visual inspection of fluid fertilizer samples as received. Key visual features to record include:

  • Ullage (air space in the container)
  • Presence of films, incrustations, or phase separations
  • Clarity, color, temperature, and consistency
  • Identification of extraneous materials

• Preparation and Mixing
  Thorough methods are described to ensure homogeneous test samples:

  • Procedures for mixing both solutions and suspensions
  • Steps to address issues such as settling, phase separation, or gelling
  • Guidance on how to blend and reduce a series of samples into a single, representative sample

• Labelling and Documentation
  The document establishes clear requirements for sample labeling and accompanying documentation:

  • Manufacturer, product, and batch details
  • Sampling location, date, and sampler identity
  • Reference to the applicable standard

• Test Reporting
  Standards for minimum content in the test report, including:

  • Description and appearance of the sample
  • Details of any notable findings (settling, incrustation)
  • Reference to procedures followed and any deviations
  • Examiner information and examination date

Applications

SIST EN ISO 10249:2026 is an essential tool for:

• Fertilizer Manufacturers: Ensures samples taken for quality control or regulatory purposes are assessed and prepared consistently, reducing variability in physical testing results.
• Laboratories: Provides standardized methods for receiving, examining, recording, and preparing fluid fertilizer samples, enhancing the reliability of physical test data.
• Regulatory Authorities: Supports enforcement of national and international regulations regarding fertilizer quality by providing a technical basis for sample handling and reporting.
• Traders and Distributors: Used to validate consignments during delivery and helps prevent disputes arising from inconsistent testing procedures.

Adoption of this standard leads to improved traceability and comparability of test results throughout the supply chain, fostering trust and compliance in the global fertilizer market.

Related Standards

For comprehensive quality management in fertilizer analysis, consider the following related standards:

• ISO 14820-2: Fertilizers and liming materials - Sampling and sample preparation - Part 2: Sample preparation. This standard provides parallel guidance for solid fertilizers.
• ISO 5306: Fertilizers - Presentation of sampling reports. Offers additional recommendations for documenting sampling activities.

Together, these standards form an integrated approach to sampling, sample preparation, and reporting across both fluid and solid fertilizer products.

Keywords: SIST EN ISO 10249:2026, fluid fertilizers, sample preparation, fertilizer quality control, physical testing, sampling, CEN standard, fertilizer laboratory testing, fertilizer documentation, fertilizer industry standards.

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2026
Nadomešča:
SIST EN ISO 10249:2002
Tekoča gnojila - Predhodni vizualni pregled in priprava vzorcev za fizikalno
preskušanje (ISO 10249:2026)
Fluid fertilizers - Preliminary visual examination and preparation of samples for physical
testing (ISO 10249:2026)
Flüssige Düngemittel - Visuelle Vorprüfung und Vorbereitung von Proben für
physikalische Prüfungen (ISO 10249:2026)
Engrais liquides - Examen visuel préliminaire et préparation des échantillons pour essais
physiques (ISO 10249:2026)
Ta slovenski standard je istoveten z: EN ISO 10249:2026
ICS:
65.080 Gnojila Fertilizers
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 10249
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2026
EUROPÄISCHE NORM
ICS 65.080 Supersedes EN ISO 10249:1999
English Version
Fluid fertilizers - Preliminary visual examination and
preparation of samples for physical testing (ISO
10249:2026)
Engrais liquides - Examen visuel préliminaire et Flüssige Düngemittel - Visuelle Vorprüfung und
préparation des échantillons pour essais physiques Vorbereitung von Proben für physikalische Prüfungen
(ISO 10249:2026) (ISO 10249:2026)
This European Standard was approved by CEN on 5 March 2026.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10249:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 10249:2026) has been prepared by Technical Committee ISO/TC 134
"Fertilizers, soil conditioners and beneficial substances" in collaboration with Technical Committee
CEN/TC 260 “Fertilizers and liming materials” the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by September 2026, and conflicting national standards
shall be withdrawn at the latest by September 2026.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 10249:1999.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 10249:2026 has been approved by CEN as EN ISO 10249:2026 without any modification.

International
Standard
ISO 10249
Second edition
Fluid fertilizers — Preliminary
2026-02
visual examination and preparation
of samples for physical testing
Engrais liquides — Examen visuel préliminaire et préparation des
échantillons pour essais physiques
Reference number
ISO 10249:2026(en) © ISO 2026
ISO 10249:2026(en)
© ISO 2026
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO 10249:2026(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Preparation of test sample . 1
4.1 General .1
4.2 Condition of the container .1
4.3 Opening of the container .1
5 Procedure . 2
5.1 Procedures for solutions .2
5.1.1 Visual examination .2
5.1.2 Mixing .2
5.2 Procedures for suspensions . . .2
5.2.1 Visual examination .2
5.2.2 Mixing (where appropriate) .3
5.2.3 Blending and reduction of a series of samples .3
6 Labelling of sample containers . . 4
7 Sample test report . 4
Bibliography . 5

iii
ISO 10249:2026(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 int
...