EN ISO 10249:1999

Fluid fertilizers - Preliminary visual examination and preparation of samples for physical testing (ISO 10249:1996)

Specifies a procedure for preliminary examination of a single sample as received and a procedure for preparing a test sample by blending and reduction of a series of samples representative of a consignment of fluid fertilizer.

Flüssige Düngemittel - Visuelle Vorprüfung und Vorbereitung von Proben für physikalische Prüfungen (ISO 10249:1996)

Diese Internationale Norm legt ein Verfahren zur Vorprüfung einer zur Prüfung übergebenen Einzelprobe im Lieferzustand und ein Verfahren zur Vorbereitung einer Probe für die Untersuchung durch Mischen und Reduzieren einer Reihe von repräsentativen Proben aus einem Lieferposten oder einer Lieferung flüssiger Düngemittel fest. Anmerkung: Diese Norm ergänzt die entsprechende Norm für feste Düngemittel (ISO 8538).

Engrais liquides - Examen visuel préliminaire et préparation des échantillons pour essais physiques (ISO 10249:1996)

Tekoča gnojila - Predhodni vizualni pregled in priprava vzorcev za fizikalno preskušanje (ISO 10249:1996)

General Information

• Status: Published
• Publication Date: 18-May-1999
• ICS: 65.080 - Fertilizers
• Technical Committee: CEN/TC 260 - Fertilizers and liming materials
• Drafting Committee: CEN/TC 260/WG 2 - Physical properties of fertilizers
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 31-Mar-2009
• Completion Date: 31-Mar-2009
• Ref Project: SIST EN ISO 10249:2002 - Fluid fertilizers - Preliminary visual examination and preparation of samples for physical testing (ISO 10249:1996)

Relations

• Revised: FprEN ISO 10249 - Fluid fertilizers - Preliminary visual examination and preparation of samples for physical testing (ISO/FDIS 10249:2025)
• Effective Date: 20-Aug-2025

Overview

EN ISO 10249:1999 (ISO 10249:1996) specifies procedures for the preliminary visual examination of fluid fertilizers and for the preparation of test samples. The standard covers examination of a single sample as received and the blending and reduction of a series of samples representative of a consignment to produce material suitable for physical testing.

This standard supports consistent laboratory practice and helps ensure that physical test results for fluid fertilizers are representative and repeatable.

Key Topics

• Preliminary visual examination: Inspecting a single as-received sample to note appearance, phase separation, presence of foreign matter, color, and other visible characteristics that may affect test results.
• Representative sampling: Principles for handling a series of samples taken from a consignment so that the final test portion reflects the bulk material.
• Blending and reduction: Procedures to combine multiple samples and reduce them to a test-size sample while maintaining representativity.
• Documentation and traceability: Recording observations from the visual check and the sequence of steps used to prepare the test sample to support quality control and regulatory records.

Keywords: fluid fertilizers, sample preparation, visual examination, representative samples, blending and reduction, physical testing, consignment.

Applications

EN ISO 10249:1999 is primarily used by laboratories, manufacturers, and quality control teams involved in the testing and certification of liquid fertilizers. Practical applications include:

• Routine quality control checks before carrying out physical tests (e.g., density, viscosity, phase stability).
• Preparing representative test portions from consignments for contract testing and dispute resolution.
• Ensuring sample integrity and traceability during the pre-analytical phase of laboratory work.
• Supporting compliance with procurement, trade specifications and regulatory requirements by documenting sample treatment prior to testing.

Benefits of following the standard include improved test reproducibility, clearer interpretation of physical test data, and stronger defensibility of results in commercial or regulatory contexts.

Related Standards

• EN ISO 10249:1999 corresponds to ISO 10249:1996 and is classified under ICS 65.080 (Fertilizers).
• Laboratories should apply EN ISO 10249 in conjunction with relevant national or regional regulations and other EN/ISO standards covering fertilizer testing, sampling, and laboratory quality management.

For laboratories and quality teams handling fluid fertilizers, EN ISO 10249:1999 provides a pragmatic framework to standardize pre-test sample handling and to reduce variability introduced before formal physical testing begins.

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2002
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Fluid fertilizers - Preliminary visual examination and preparation of samples for physical
testing (ISO 10249:1996)
Flüssige Düngemittel - Visuelle Vorprüfung und Vorbereitung von Proben für
physikalische Prüfungen (ISO 10249:1996)
Engrais liquides - Examen visuel préliminaire et préparation des échantillons pour essais
physiques (ISO 10249:1996)
Ta slovenski standard je istoveten z: EN ISO 10249:1999
ICS:
65.080 Gnojila Fertilizers
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

SIST EN ISO 102
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