kSIST FprEN 12944-2:2026
(Main)Fertilizers, liming materials and inhibitors - Vocabulary - Part 2: Terms relating to fertilizers
- Abstract
This document defines terms relating to fertilizers.
- Status
- Not Published
- Public Enquiry End Date
- 01-Apr-2026
- Technical Committee
- KAT - Soil quality
- Current Stage
- 5020 - Formal vote (FV) (Adopted Project)
- Start Date
- 13-Oct-2026
- Due Date
- 01-Dec-2026
kSIST FprEN 12944-2:2026 is the SIST publication of the draft European Standard prEN 12944-2. It belongs to the EN 12944 vocabulary series and defines terms relating to fertilizers for use in product descriptions, declarations, testing and technical communication.
What does kSIST FprEN 12944-2:2026 specify?
kSIST FprEN 12944-2:2026 specifies the vocabulary for fertilizers. It gives agreed terms and definitions so users can identify fertilizer materials, nutrient forms, physical properties and safety-related concepts in the same way.
The document is organized into:
- Clause 1: Scope
- Clause 2: Normative references
- Clause 3: Terms and definitions, grouped into five subclauses
- Annex A: Informative index
- Bibliography
Annex A provides an alphabetical index in English, French and German, which helps readers find a term quickly.
What are the key requirements of kSIST FprEN 12944-2:2026?
kSIST FprEN 12944-2:2026 is a vocabulary standard, so its main technical content is the set of defined terms in Clause 3. In practice, this means users should apply the document’s wording consistently when naming materials, declaring nutrients or describing product behavior.
Product and material terms
Clause 3.1 defines common fertilizer materials and slow-release nitrogen products such as manure, slurry, guano, urea formaldehyde (UF), methylene urea (MU), isobutylidene diurea (IBDU), crotonylidene diurea (CDU), triazone and urea condensate. These definitions matter when a product label, specification or test report needs a precise material name rather than a generic description.
Nutrient forms and declaration terms
Clause 3.2 defines nutrient-related terms such as total nitrogen, ammoniacal nitrogen, nitric nitrogen, ureic nitrogen, cyanamide nitrogen, total phosphorus, water-soluble phosphorus, neutral ammonium citrate soluble phosphorus, formic acid soluble phosphorus, total potassium and water-soluble potassium. It also defines cold water-insoluble nitrogen (CWIN), cold water-soluble nitrogen (CWSN), hot water-insoluble nitrogen (HWIN), hot water-soluble nitrogen (HWXN) and hot water-soluble nitrogen only (HWSN only). These terms are important because they separate total content from the fractions that are available under defined conditions.
Physical and physico-chemical properties
Clause 3.3 covers properties such as density, loose bulk density, tapped bulk density, sieving, undersize, oversize, crushing strength, caking, anti-caking agent, saturation temperature, gel strength, pourability, sedimentation, flow rate, free flowing, segregation, sphericity, porosity, disintegrable rate and salt out temperature (SOT). In practice, these terms support product handling, packaging, storage stability and performance checks.
Safety-related terms
Clause 3.4 defines resistance to detonation, oxidizing solid, oxidizing liquid, GHS label, seedling emergence and growth, and self-sustaining decomposition. These definitions matter for hazard communication, transport, storage and evaluating whether a fertilizer may create safety concerns.
Other technical terms
Clause 3.5 defines free acidity, neutralizing value, vegetative vigour, moisture, essential water, water of crystallisation, water of constitution and longevity. These terms are used to describe composition, neutralizing effect, plant response and the behavior of slowly available nutrients.
What terms does kSIST FprEN 12944-2:2026 define?
kSIST FprEN 12944-2:2026 defines fertilizer vocabulary rather than product grades. Key examples include:
- Urea formaldehyde (UF) - a slow-release nitrogenous fertilizer made by reacting urea and formaldehyde.
- Methylene urea (MU) - a slow-release nitrogenous fertilizer made from urea and formaldehyde reaction products.
- Cold water-soluble nitrogen (CWSN) - the nitrogen fraction soluble under the clause’s defined cold-water conditions.
- Hot water-soluble nitrogen only (HWSN only) - the fraction soluble at the hot-water condition but not at the cold-water condition.
- GHS label - the hazard information label used for a hazardous product.
- Neutralizing value - a measure expressed against the neutralizing effect of 100 kg of product.
- Longevity - the period over which slowly available nutrients are released for plant use.
Who uses kSIST FprEN 12944-2:2026?
kSIST FprEN 12944-2:2026 is used by people who need a shared language for fertilizers. That includes fertilizer manufacturers, laboratory staff, technical writers, regulators, conformity and quality teams, and buyers who compare product declarations or test results.
It is particularly useful in fertilizer specification, product classification, nutrient declaration, handling and safety communication. The document also helps multilingual users because Annex A indexes the terms in English, French and German.
What changed in kSIST FprEN 12944-2:2026 from the previous edition?
kSIST FprEN 12944-2:2026 supersedes EN 12944-2:1999 and EN 12944-2:1999/AC:2000. The foreword states that the definitions were reviewed, amended and extended in light of new legislation, international standards and other European standards.
The foreword also states these technical changes:
- added terms for several slow-release nitrogen products and nitrogen fractions
- added terms for phosphorus, potassium, density, disintegrable rate, salt out temperature and safety-related concepts
- moved particle size analysis by sieving/granulometry by sieving to prEN 12944-1 rev
- deleted the term apparent density
Which standards are used with kSIST FprEN 12944-2:2026?
The document names these related standards and references:
- prEN 12944-1 rev - the vocabulary part for general terms; Clause A and the foreword point to it for the moved particle-size term
- EN 12944-3:2025 - the vocabulary part for liming materials; it is cited for neutralizing value and the series structure
- EN 13535 - gives a classification scheme for fertilizers and liming materials
- ISO 8157:2022 - provides source definitions for many terms that are adapted in this part
- Regulation (EU) 2019/1009 - the European legal framework mentioned in the introduction and foreword for fertilizers, liming materials and inhibitors
What does the kSIST FprEN 12944-2:2026 document contain?
kSIST FprEN 12944-2:2026 contains a structured list of fertilizer terms with short definitions and source notes. Clause 3 is the main body of the document, and its subclauses separate product terms, nutrient-declaration terms, physical and physico-chemical terms, safety terms and other technical terms.
The document also includes an informative index in Annex A, which lists the defined terms with references to their clause numbers. The bibliography shows the legal and standardization context used for the terminology.
Relations
- Effective Date
- 01-Mar-2026
- Effective Date
- 01-Mar-2026
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Frequently Asked Questions
kSIST FprEN 12944-2:2026 is a draft published by the Slovenian Institute for Standardization (SIST). Its full title is "Fertilizers, liming materials and inhibitors - Vocabulary - Part 2: Terms relating to fertilizers". This standard covers: This document defines terms relating to fertilizers.
This document defines terms relating to fertilizers.
kSIST FprEN 12944-2:2026 is classified under the following ICS (International Classification for Standards) categories: 01.040.65 - Agriculture (Vocabularies); 65.080 - Fertilizers. The ICS classification helps identify the subject area and facilitates finding related standards.
kSIST FprEN 12944-2:2026 has the following relationships with other standards: It is inter standard links to SIST EN 12944-2:2002/AC:2002, SIST EN 12944-2:2002. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
kSIST FprEN 12944-2:2026 is associated with the following European legislation: EU Directives/Regulations: 2019/1009. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
kSIST FprEN 12944-2:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 12944-2:2026
01-marec-2026
Gnojila, sredstva za apnjenje in inhibitorji - Slovar - 2. del: Izrazi v zvezi z gnojili
Fertilizers, liming materials and inhibitors - Vocabulary - Part 2: Terms relating to
fertilizers
Düngemittel und Kalkdünger - Vokabular - Teil 2: Begriffe für Düngemittel
Engrais et amendements calciques et/ou magnésiens - Vocabulaire - Partie 2: Termes
relatifs aux engrais
Ta slovenski standard je istoveten z: prEN 12944-2
ICS:
01.040.65 Kmetijstvo (Slovarji) Agriculture (Vocabularies)
65.080 Gnojila Fertilizers
oSIST prEN 12944-2:2026 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
oSIST prEN 12944-2:2026
oSIST prEN 12944-2:2026
DRAFT
EUROPEAN STANDARD
prEN 12944-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2026
ICS 01.040.65 Will supersede EN 12944-2:1999
English Version
Fertilizers, liming materials and inhibitors - Vocabulary -
Part 2: Terms relating to fertilizers
Engrais, amendements minéraux basiques et Düngemittel, Kalkdünger und Hemmstoffe - Begriffe -
inhibiteurs - Vocabulaire - Partie 2: Termes relatifs aux Teil 2: Begriffe für Düngemittel
engrais
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 12944-2:2026 E
worldwide for CEN national Members.
oSIST prEN 12944-2:2026
prEN 12944-2 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
3.1 General terms related to products . 5
3.2 Availability and declaration forms of primary macronutrients . 7
3.3 Terms relating to physical and physico-chemical properties . 9
3.4 Terms relating to safety . 11
3.5 Other terms . 12
Annex A (informative) Index . 14
Bibliography . 17
oSIST prEN 12944-2:2026
prEN 12944-2 (E)
European foreword
This document (prEN 12944-2:2026) has been prepared by Technical Committee CEN/TC 260
“Fertilizers and liming materials”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 12944-2:1999 and EN 12944-2:1999/AC:2000.
In comparison with the previous edition, the following technical modifications have been made:
— Définitions reviewed, amended and extended where appropriate in light of new legislation,
international and other European standards;
— Inclusion of the following terms: isobutylidene diurea, crotonylidene diurea, triazone, cold water-
insoluble nitrogen, cold water-soluble nitrogen, hot water-insoluble nitrogen, hot water-soluble
nitrogen, hot water-soluble nitrogen only, total nitrogen, ammoniacal nitrogen, nitric nitrogen,
ureic nitrogen, cyanamide nitrogen, total phosphorus, water-soluble phosphorus, neutral
ammonium citrate soluble phosphorus, formic acid soluble phosphorus, total potassium, water-
soluble potassium, density, disintegrable rate, salt out temperature, resistance to detonation,
oxidizing solid, oxidizing liquid, GHS label, seedling emergence and growth, self-sustaining
decomposition, free acidity, neutralizing value, vegetative vigour, essential water, water of
crystallisation, water of constitution, longevity;
— The term particle size analysis by sieving/granulometry by sieving was deleted and moved to prEN
12944-1 rev [1];
— The term apparent density was deleted.
This document has been prepared under a standardization request addressed to CEN by the European
Commission. The Standing Committee of the EFTA States subsequently approves these requests for its
Member States.
EN 12944, Fertilizers, liming materials and inhibitors — Vocabulary, currently consists of the
following parts:
— Part 1: General terms.
— Part 2: Terms relating to fertilizers.
— Part 3: Terms relating to liming materials.
These définitions do not necessarily correspond with those used in national legislation.
NOTE A classification scheme for fertilizers and liming materials is given in EN 13535 [2]
oSIST prEN 12944-2:2026
prEN 12944-2 (E)
Introduction
Fertilizers, liming materials and inhibitors are définéd in Regulation (EU) 2019/1009 [3].
An index of all terms définéd in this part of the EN 12944 series is given in Annex A, Table A.1 in English,
French and German.
oSIST prEN 12944-2:2026
prEN 12944-2 (E)
1 Scope
This document définés terms relating to fertilizers.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and définitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at http://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
3.1 General terms related to products
3.1.1
basic slag
product obtained in iron-smelting by treatment of phosphorus-containing melts and with calcium silico-
phosphates as essential ingredients
Note 1 to entry: The terms “Thomas phosphate” and “Thomas slag” are used in some countries to describe basic
slag.
3.1.2
dried blood
blood meal
blood which has been dried and to which no other material has been added
3.1.3
bone meal
degreased bone which may be degelatinized and which has been ground or crushed to pass a sieve of
spécifiéd aperture size
3.1.4
dung
semi-solid excrements of animals used as fertilizers and/or soil improvers
3.1.5
fish compost
product obtained by composting fish and/or fish waste and to which no addition has been made
Note 1 to entry: Fish waste also includes fish excrements.
3.1.6
fish meal
product obtained by drying and grinding fish and/or fish waste and to which no addition has been made
3.1.7
guano
excrement and remains of any bats or birds, except poultry, containing nitrogen, phosphorus and
potassium, and to which no addition has been made
[SOURCE: ISO 8157:2022 [4], 3.2.8.12 – modifiéd, term changed from bat guano or bird guano to guano]
oSIST prEN 12944-2:2026
prEN 12944-2 (E)
3.1.8
leather waste
waste in a form of pieces or powder resulting from the manufacture of leather goods
3.1.9
liquid manure
liquid arising from animal urine and litter flüids or from a dung heap
3.1.10
manure
excrement and/or urine of farmed animals other than farmed fish, with or without litter
Note 1 to entry: Based on Regulation (EU) 2019/1009, Annex II, CMC 15 (2) (b) (viii) [3]
3.1.11
meat meal
product obtained by drying and grinding, or otherwise treating, flésh or flésh fibré and to which no
addition has been made
3.1.12
oil cake
residue remaining after the removal of the oil from oilseeds
3.1.13
peat
form of humus, created out of residual matter from plants grown and decayed in almost permanently
waterlogged conditions and which can contain a limited quantity of naturally occurring mineral material
3.1.14
slurry
semi-liquid éfflüént from livestock, consisting of urine and faeces, possibly diluted with water
[SOURCE: ISO 8157:2022 [4], 3.2.8.24]
3.1.15
urea formaldehyde
UF
slow-release nitrogenous fertilizer obtained by the reaction between urea and formaldehyde to produce
molecular chains of general formula NH -CO-NH(CH NHCONH) H
2 2 n
[SOURCE: ISO 8157:2022 [4], 3.2.8.26]
3.1.16
methylene urea
MU
polymethylene urea
slow-release nitrogenous fertilizer obtained by the reaction between urea and formaldehyde to produce
oligomers or adducts of urea and formaldehyde
Note 1 to entry: It is chiéfly composed of cold water soluble fraction from methylenediurea (MDU) and
dimethylenetriurea (DMTU) hot water soluble fraction from trimethylenetetraurea (TMTU) and
tetramethylenepentaurea (TMPU) and hot water insoluble fractions from longer chain oligomers. It is generally
free of methylolureas and methylol ethers. It is a source of slowly available nitrogen.
[SOURCE: ISO 8157:2022 [4], 3.2.8.26.1]
oSIST prEN 12944-2:2026
prEN 12944-2 (E)
3.1.17
isobutylidene diurea
IBDU
slow-release nitrogenous fertilizer obtained by the reaction between urea and isobutyraldehyde
Note 1 to entry: It is a source of slowly available nitrogen by virtue of particle size, solubility decreasing with
increase in particle size.
[SOURCE: ISO 8157:2022 [4], 3.2.8.26.2]
3.1.18
crotonylidene diurea
CDU
slow-release nitrogenous fertilizer obtained by the reaction between urea and crotonaldehyde
Note 1 to entry: It is a source of slowly available nitrogen.
[SOURCE: ISO 8157:2022 [4], 3.2.8.26.3]
3.1.19
triazone
water soluble compound of formula C H N O [5-(N-methyl)-urea-1,3,5-triazin-2-one or 5-
5 11 5 2
methyleneureido-2-oxohexahydro-s triazine], produced by reaction of urea, formaldehyde, and
ammonia
Note 1 to entry: It is a source of slowly available nitrogen.
[SOURCE: ISO 8157:2022 [4], 3.2.8.26.9]
3.1.20
urea condensate
product of reaction between urea and aldehyde(s) that produces a slow-release nitrogenous fertilizer
EXAMPLE Urea formaldehyde (UF), methylene urea (MU), crotonylidene diurea (CDU), isobutylidene diurea
(IBDU), triazone.
[SOURCE: ISO 8157:2022 [4], 3.2.8.25]
3.2 Availability and declaration forms of primary macronutrients
3.2.1
cold water-insoluble nitrogen
CWIN
insoluble nitrogen fractions in urea formaldehyde or methylene urea products that are insoluble in
phosphate buffer solution (pH 7,5) or distilled water at 25 °C during a 15-min period
[SOURCE: ISO 8157:2022 [4], 3.2.8.26.4]
3.2.2
cold water-soluble nitrogen
CWSN
soluble nitrogen fraction in urea formaldehyde or methylene urea products that is soluble in phosphate
b
...