FprCEN/TS 17403

SLOVENSKI STANDARD
kSIST-TS FprCEN/TS 17403:2019
01-julij-2019
Gnojila - Določevanje v hladni in vroči vodi netopnega dušika, dobljenega s
počasnim sproščanjem iz trdnih gnojil urea formaldehida in metilen uree in iz
polimerov hranil

Fertilizers - Determination of cold water insoluble nitrogen and hot water insoluble

nitrogen in solid urea formaldehyde and methylene urea slow-release fertilizers and in

Düngemittel - Bestimmung von kalt- und heißwasserunlöslichem Stickstoff in festen

Engrais - Dosage de l’azote insoluble dans l’eau froide et de l’azote insoluble dans l’eau

chaude dans les engrais à libération lente urée formaldéhyde solide et méthylène-urée

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

Engrais - Dosage de l'azote insoluble dans l'eau froide Düngemittel - Bestimmung von kalt- und

et de l'azote insoluble dans l'eau chaude dans les heißwasserunlöslichem Stickstoff in festen langsam

engrais à libération lente urée formaldéhyde solide et freisetzenden Harnstoff-Formaldehyden und

méthylène-urée et dans les polymères nutritif Methylenharnstoff sowie in Nährstoffpolymeren

This draft Technical Specification is submitted to CEN members for Vote. It has been drawn up by the Technical Committee

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

Warning : This document is not a Technical Specification. It is distributed for review and comments. It is subject to change

© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. FprCEN/TS 17403:2019 E

European foreword ....................................................................................................................................................... 3

Introduction .................................................................................................................................................................... 4

1 Scope .................................................................................................................................................................... 5

2 Normative references .................................................................................................................................... 5

3 Terms and definitions ................................................................................................................................... 5

4 Determination of the mass fraction of CWIN ......................................................................................... 7

4.1 Principle ............................................................................................................................................................. 7

4.2 Reagents ............................................................................................................................................................. 7

4.3 Apparatus ........................................................................................................................................................... 7

4.4 Procedure........................................................................................................................................................... 7

4.5 Calculation and expression of results ...................................................................................................... 8

5 Determination of the mass fraction of HWIN ........................................................................................ 8

5.1 Principle ............................................................................................................................................................. 8

5.2 Reagents ............................................................................................................................................................. 8

5.3 Apparatus ........................................................................................................................................................... 8

5.4 Procedure........................................................................................................................................................... 8

5.5 Calculation and expression of results ...................................................................................................... 9

6 Sampling and sample preparation ............................................................................................................ 9

6.1 Sampling of products in bags and in bulk .............................................................................................. 9

6.2 Reduction of samples ..................................................................................................................................... 9

7 Test report ......................................................................................................................................................... 9

Bibliography ................................................................................................................................................................. 10

This document (FprCEN/TS 17403:2019) has been prepared by Technical Committee CEN/TC 260

Solid urea formaldehyde and methylene urea slow-release fertilizers are non-coated and chemically

synthesized nitrogen fertilizers with slow-release effect. In 1924, the first slow-release fertilizer patent

in the world was issued to urea formaldehyde (UF) and in 1955, UF was put into commercial production

WARNING — Users of this document should be familiar with normal laboratory practice. This

document does not purport to address all of the safety issues, if any, associated with its use. It is the

responsibility of the user to establish appropriate health and safety practices and to ensure compliance

IMPORTANT — It is absolutely essential that tests conducted according to this document are carried

This document specifies a method for the determination of the cold and hot water insoluble nitrogen

content in solid urea formaldehyde and methylene urea slow-release fertilizers and for the

determination of the hot water soluble nitrogen content in nutrient polymers (see Component Material

Category CMC 9 as specified in the Regulation (EC) No xxxx/2019 on Fertilizing Products [2]).

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

EN 12944-1, Fertilizers and liming materials — Vocabulary — Part 1: General terms

EN 12944-2, Fertilizers and liming materials — Vocabulary — Part 2: Terms relating to fertilizers

prEN ISO 14820-2, Fertilizers and liming materials — Sampling and sample preparation — Part 2:

ISO 5315, Fertilizers — Determination of total nitrogen content — Titrimetric method after distillation

ISO 19670:2017, Fertilizers and soil conditioners — Solid urea aldehyde slow release fertilizers — General

For the purposes of this document, the terms and definitions given in EN 12944-1 and EN 12944-2 and

ISO and IEC maintain terminological databases for use in standardization at the following addresses: