kSIST FprEN 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: 5020 - Formal vote (FV) (Adopted Project)
• Start Date: 03-Nov-2026
• Due Date: 22-Dec-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

kSIST FprEN 17760:2026 is a draft European Standard published by SIST for the CEN text prEN 17760:2026. It specifies a sieve-based method for determining the particle size of ammonium nitrate fertilizers of high nitrogen content by measuring the mass fractions that pass 0.5 mm and 1.0 mm sieves.

The standard is for laboratories, manufacturers, and quality teams that need a repeatable way to check this fertilizer type by particle size. It is limited to ammonium nitrate fertilizers of high nitrogen content and is written for routine test work rather than for blending products.

What does kSIST FprEN 17760:2026 specify?

kSIST FprEN 17760:2026 specifies the method, equipment, calculation steps, and reporting rules for determining the particle size distribution of ammonium nitrate fertilizers of high nitrogen content. The method is based on sieving a test portion and calculating the fractions that pass the required meshes.

The document is organized into 11 clauses, followed by a bibliography:

• Scope
• Normative references
• Terms and definitions
• Principle
• Apparatus and equipment
• Sampling and sample preparation
• Procedure
• Evaluation of the results
• Expression of the results
• Precision
• Test report

This structure matters in practice because it takes the user from sample handling to the final reported result in one procedure.

What are the key requirements of kSIST FprEN 17760:2026?

kSIST FprEN 17760:2026 sets out a laboratory sieve test that can be run by hand or with a mechanical shaker. The method is simple, but the result depends on controlled sample preparation, sieve setup, and mass balance.

Test principle and equipment

Clause 4 says to sieve the test portion on a nest of three sieves, then record the mass retained on each sieve and calculate the percentage passing the required sieves. Clause 5 specifies 200 mm woven-wire test sieves with apertures of 2.0 mm, 1.0 mm, and 0.5 mm, plus a lid, receiver, balance to the nearest 0.1 g, and, if available, a mechanical sieve shaker.

In practice, this means the laboratory needs a fixed sieve set and weighing accuracy good enough to support a mass-based result.

Sampling and sample preparation

Clause 6 says sampling is not part of the method. It points users to EN 1482-1 for recommended sampling and requires sample preparation to follow EN 1482-2.

This matters because the sieve result only represents the product if the laboratory receives a representative sample that has not been damaged or changed during transport or storage.

Procedure

Clause 7 requires the sample to be divided representatively into test portions of approximately 100 g, then one portion is weighed to the nearest 0.1 g. The sieves are arranged in the order receiver, 0.5 mm, 1 mm, 2 mm, with the test portion placed on top.

The sample is shaken for 10 minutes, or until the amount passing each sieve in one minute is less than 0.1 g. The retained material and receiver fraction are then reweighed. In practice, this gives a clear stopping rule and a repeatable way to collect all size fractions.

Evaluation and repeatability

Clause 8 defines the calculation points: A is the percentage in the receiver, B is the percentage retained on the 0.5 mm sieve, and A + B is the percentage passing 1.0 mm. The sum of the fractions has to be within 2% of the initial mass taken.

The clause also requires at least two separate analyses. The individual A results must not differ by more than 1.0% absolute, and the individual B results by more than 1.5% absolute, otherwise the test is repeated. This helps users check whether the result is stable enough to report.

Reporting

Clause 9 says to report the mean of the two values for A and the mean of the two values for A + B. Clause 11 lists the minimum report contents, including sample identification, the method reference, results, sampling details if known, the end date of analysis, and any deviations or incidents.

What terms does kSIST FprEN 17760:2026 define?

kSIST FprEN 17760:2026 uses the terms and definitions from EN 12944-1 and EN 12944-2.

• Ammonium nitrate fertilizers of high nitrogen content - the product type covered by the method.
• Test portion - the weighed subsample taken from the laboratory sample for one sieve determination.
• Receiver - the collecting vessel below the smallest sieve, used for material passing 0.5 mm.
• Mass fraction - the share of material in a stated size fraction, reported as a percentage.
• A - the percentage of the test portion found in the receiver, meaning the fraction below 0.5 mm.
• B - the percentage retained on the 0.5 mm sieve.
• A + B - the percentage passing 1.0 mm, calculated from the measured fractions.

Who uses kSIST FprEN 17760:2026?

kSIST FprEN 17760:2026 is used by testing laboratories, fertilizer producers, quality control staff, and technical purchasers who need a common method for particle size assessment. It is also relevant where product acceptance depends on sieve performance or on documenting a test result in a report.

What changed in kSIST FprEN 17760:2026 from the previous edition?

kSIST FprEN 17760:2026 will supersede CEN/TS 17760:2022. The foreword states these significant technical changes:

• the CEN Technical Specification has been adopted as a European Standard
• the scope was clarified so only a limited number of sieves has to be used
• Clause 7 was updated for sampling and sample preparation
• the normative references were updated
• the bibliography was updated

Which standards are used with kSIST FprEN 17760:2026?

Standard	What it contributes
EN 1482-2	General sample preparation provisions used in Clause 6.2
EN 12944-1	General fertilizer vocabulary used for terms and definitions
EN 12944-2	Fertilizer-specific vocabulary used for terms and definitions
EN 1482-1	Recommended sampling method referred to in Clause 6.1 and listed in the bibliography

What does the kSIST FprEN 17760:2026 document contain?

kSIST FprEN 17760:2026 contains a laboratory method rather than a product specification. Its main technical content is the sieve setup, the handling of approximately 100 g test portions, the 10-minute shaking or end-point criterion, and the calculation of A, B, and A + B.

The document also includes the equipment list, the mass-balance check, the repeatability check between duplicate analyses, and the minimum test report items. These parts support routine quality control, acceptance testing, and traceable reporting.

SLOVENSKI STANDARD
oSIST prEN 17760:2026
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
oSIST prEN 17760:2026 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 17760:2026
oSIST prEN 17760:2026
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.

oSIST prEN 17760:2026
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

oSIST prEN 17760:2026
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
...