oSIST prEN 17760:2026

• Abstract:

  This document specifies a method for the determination of the mass fractions of ammonium nitrate fertilizers of high nitrogen content that passes certain mesh sieves (0,5 mm and 1,0 mm).; This document is not applicable to fertilizing products blends, other than ammonium nitrate fertilizers of high nitrogen content.

• Status: Not Published
• Public Enquiry End Date: 01-Mar-2026
• ICS: 65.080 - Fertilizers
• Technical Committee: KAT - Soil quality
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 08-Jan-2026
• Due Date: 28-May-2026
• Completion Date: 29-May-2026
• Directive: 2019/1009 - Regulation (EU) 2019/1009 of the European Parliament and of the Council of 5 June 2019 laying down rules on the making available on the market of EU fertilising products and amending Regulations (EC) No 1069/2009 and (EC) No 1107/2009 and repealing Regulation (EC) No 2003/2003 (Text with EEA relevance)
• Mandate: M/564 - Fertilising products in support of Regulation (EU) 2019/1009
• Mandate: M/564 AMD 1 - amending Implementing Decision C(2020) 612 as regards certain harmonised standards and standardisation deliverables, deadlines for their adoption and the duration of the validity of the standardisation request
• Mandate: M/564 AMD 2 - Commission Implementing decision amending Implementing Decision C(2020)612 as regards harmonised standards, the deadlines for the adoption of those standards and the duration of the validity of the standardisation request to the European Committee for Standardisation as regards the EU fertilising products in support of Regulation (EU) 2019/1009 of the European Parliament and of the Council
• Ref Project: FprEN 17760 - Inorganic fertilizers - Determination of particle size of ammonium nitrate fertilizers of high nitrogen content

• Revises: SIST-TS CEN/TS 17760:2023 - Inorganic fertilizers - Determination of particle size of ammonium nitrate fertilizers of high nitrogen content
• Effective Date: 01-Feb-2026

oSIST prEN 17760:2026 is the Slovenian version of the CEN draft European Standard prEN 17760. It gives a laboratory sieve method for determining particle size in ammonium nitrate fertilizers of high nitrogen content, especially the fractions passing 0,5 mm and 1,0 mm sieves. The document is aimed at laboratories and manufacturers that need a repeatable way to check granulation of this fertilizer type.

What does oSIST prEN 17760:2026 specify?

oSIST prEN 17760:2026 specifies a test method for ammonium nitrate fertilizers of high nitrogen content and limits its use to that product family. It is not intended for other fertilizing product blends.

The document is organized into clauses on scope, normative references, terms and definitions, principle, apparatus and equipment, sampling and sample preparation, procedure, evaluation of results, expression of results, precision, and test report, followed by a bibliography. In practice, this structure takes the user from sample handling through to the final report.

What are the key requirements of oSIST prEN 17760:2026?

The core of oSIST prEN 17760:2026 is a sieve analysis on a defined nest of sieves. The method shows how to prepare a test portion, separate it on sieves, weigh the retained fractions, and calculate the particle-size fractions reported by the standard.

Principle and equipment

Clause 4 states that the test portion is sieved on a nest of three sieves, by hand or by mechanical means, and that the retained masses are used to calculate the passing fractions. This matters because the result depends on controlled separation rather than visual judgment.

Clause 5 specifies the equipment: 200 mm woven-wire test sieves with apertures of 2,0 mm, 1,0 mm and 0,5 mm, a balance readable to 0,1 g, and, where available, a mechanical sieve shaker with vertical and horizontal motion. In practice, this defines the hardware needed to get comparable results between laboratories.

Sampling and sample preparation

Clause 6 says sampling is not part of the method itself. It points users to EN 1482-1 for recommended sampling and requires sample preparation in accordance with EN 1482-2, with the sample kept representative and unchanged during transport or storage. That means the sieve test is only meaningful if the laboratory receives a suitable sample.

Procedure and calculations

Clause 7 instructs the user to divide the sample representatively into test portions of about 100 g, weigh the portion, arrange the sieves in ascending order, and shake for 10 minutes or until the amount passing in one minute is less than 0,1 g. The retained material is then collected and weighed.

Clause 8 gives the calculation basis: the fractions are expressed as percentages of the total fraction masses, not the original sample mass. It defines the reporting fractions A for the receiver, B for the 0,5 mm sieve, and A + B for material passing 1,0 mm. The summed fractions must be within 2 % of the initial mass, and duplicate analyses must agree within the stated absolute differences or the test is repeated.

Reporting and precision

Clause 9 requires reporting the mean values for A and for A + B. Clause 10 states that no precision data are available because a representative inter-laboratory study could not be prepared. Clause 11 lists the minimum test-report items, including sample identification, the method reference, results, sampling information if known, completion date, and any optional operating details or incidents.

What terms does oSIST prEN 17760:2026 define?

oSIST prEN 17760:2026 uses the vocabulary from EN 12944-1 and EN 12944-2. The following terms are central to the method:

• Test portion - the approximately 100 g sub-sample actually placed on the sieve nest.
• Receiver - the vessel under the finest sieve that collects material passing 0,5 mm.
• Mass fraction - the percentage of the test portion found in a given sieve fraction.
• Mechanical sieve shaker - equipment that moves the sieve nest to separate particles by size.
• Representative sample - a sample that reflects the product and the analysis to be performed.

Who uses oSIST prEN 17760:2026?

oSIST prEN 17760:2026 is used by laboratories that test fertilizer particle size, by manufacturers of ammonium nitrate fertilizers of high nitrogen content, and by quality teams that need a documented particle-size check. It is relevant wherever the product specification depends on how much material passes the 0,5 mm and 1,0 mm sieves.

What changed in oSIST prEN 17760:2026 from the previous edition?

oSIST prEN 17760:2026 supersedes CEN/TS 17760:2022. The foreword states these significant changes: the CEN Technical Specification was adopted as a European Standard, the scope was clarified so that only a limited number of sieves is used, Clause 7 was updated for sampling and sample preparation, and the normative references and bibliography were updated.

Which standards are used with oSIST prEN 17760:2026?

• EN 1482-1 - recommended sampling method cited in Clause 6.1.
• EN 1482-2 - general sample preparation provisions required by Clause 6.2.
• EN 12944-1 - general fertilizer vocabulary used in Clause 3.
• EN 12944-2 - fertilizer-specific vocabulary used in Clause 3.

What does the oSIST prEN 17760:2026 document contain?

The document contains the full test sequence for sieve-based particle-size determination: principle, equipment list, sampling and sample preparation, step-by-step sieve procedure, calculation of A, B and A + B, and the reporting format. It also gives acceptance checks for duplicate results and a precision note for users who need to understand the limits of the method. Clause 11 provides the report checklist needed for laboratory records or product testing files.

SLOVENSKI STANDARD
01-februar-2026
Anorganska gnojila - Določanje velikosti delcev gnojil iz amonijevega nitrata z
veliko vsebnostjo dušika
Inorganic fertilizers - Determination of particle size of ammonium nitrate fertilizers of high
nitrogen content
Ta slovenski standard je istoveten z: prEN 17760
ICS:
65.080 Gnojila Fertilizers
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
prEN 17760
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2026
ICS 65.080 Will supersede CEN/TS 17760:2022
English Version
Inorganic fertilizers - Determination of particle size of
ammonium nitrate fertilizers of high nitrogen content

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 260.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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.
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 supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

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. prEN 17760:2026 E
worldwide for CEN national Members.

prEN 17760:2026 (E)
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Principle . 4
5 Apparatus and equipment . 4
6 Sampling and sample preparation . 5
6.1 Sampling . 5
6.2 Sample preparation . 5
7 Procedure . 5
8 Evaluation of the results . 5
9 Expression of the results . 5
10 Precision . 6
11 Test report . 6
Bibliography . 7

prEN 17760:2026 (E)
European foreword
This document (prEN 17760:2026) has been prepared by Technical Committee CEN/TC 260 “Fertilizers
and liming materials”, the secretariat of which is held by DIN.
This is currently submitted to the CEN Enquiry.
This document will supersede CEN/TS 17760:2022.
prEN 17760:2026 includes the following significant technical changes with respect to
CEN/TS 17760:2022:
— The CEN Technical Specification has been adopted as a European Standard.
— The scope (Clause 1) has been changed in order to clarify that only a limited number of sieves has to
be used.
— Clause 7 has been updated regarding sampling and sample preparation.
— Normative references (Clause 2) updated.
— Bibliography updated.
This document has been prepared under a standardization reques
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