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)

General Information

• Status: Published
• Publication Date: 10-Mar-2026
• ICS: 65.080 - Fertilizers
• Technical Committee: CEN/TC 260 - Fertilizers and liming materials
• Drafting Committee: CEN/TC 260/WG 1 - Sampling
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 11-Mar-2026
• Completion Date: 11-Mar-2026
• Ref Project: SIST EN ISO 10249:2026 - Fluid fertilizers - Preliminary visual examination and preparation of samples for physical testing (ISO 10249:2026)

Relations

• Replaces: EN ISO 10249:1999 - Fluid fertilizers - Preliminary visual examination and preparation of samples for physical testing (ISO 10249:1996)
• Effective Date: 20-Aug-2025
• Consolidated By: ISO 10249:2026 - Fluid fertilizers — Preliminary visual examination and preparation of samples for physical testing
• Effective Date: 12-Feb-2026

Overview

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. 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

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: 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
kSIST FprEN ISO 10249:2026
01-januar-2026
Tekoča gnojila - Predhodni vizualni pregled in priprava vzorcev za fizikalno
preskušanje (ISO/FDIS 10249:2025)
Fluid fertilizers - Preliminary visual examination and preparation of samples for physical
testing (ISO/FDIS 10249:2025)
Flüssige Düngemittel - Visuelle Vorprüfung und Vorbereitung von Proben für
physikalische Prüfungen (ISO/FDIS 10249:2025)
Engrais liquides - Examen visuel préliminaire et préparation des échantillons pour essais
physiques (ISO/FDIS 10249:2025)
Ta slovenski standard je istoveten z: FprEN ISO 10249
ICS:
65.080 Gnojila Fertilizers
kSIST FprEN ISO 10249:2026 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

kSIST FprEN ISO 10249:2026
kSIST FprEN ISO 10249:2026
FINAL DRAFT
International
Standard
ISO/FDIS 10249
ISO/TC 134
Fluid fertilizers — Preliminary
Secretariat: INSO
visual examination and preparation
Voting begins on:
of samples for physical testing
Engrais liquides — Examen visuel préliminaire et préparation des
Voting terminates on:
échantillons pour essais physiques
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/CEN PARALLEL PROCESSING LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
ISO/FDIS 10249:2025(en) © ISO 2025

kSIST FprEN ISO 10249:2026
FINAL DRAFT
ISO/FDIS 10249:2025(en)
International
Standard
ISO/FDIS 10249
ISO/TC 134
Fluid fertilizers — Preliminary
Secretariat: INSO
visual examination and preparation
Voting begins on:
of samples for physical testing
Engrais liquides — Examen visuel préliminaire et préparation des
Voting terminates on:
échantillons pour essais physiques
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2025
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/CEN PARALLEL PROCESSING
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
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 Reference number
ISO/FDIS 10249:2025(en) © ISO 2025

ii
kSIST FprEN ISO 10249:2026
ISO/FDIS 10249:2025(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 Conditioning of container .1
4.3 Opening of 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
kSIST FprEN ISO 10249:2026
ISO/FDIS 10249:2025(en)
Foreword
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