ISO 17323:2015

Fertilizers and soil conditioners — Sulfur Coated Urea (SCU) — General requirements

ISO 17323:2015 specifies general requirements, sampling and preparation of test sample, marking and labelling, packaging, transport, and storage for SCU.

Matières fertilisantes — Urée enrobée de soufre (SCU) — Exigences générales

General Information

• Status: Published
• Publication Date: 02-Jun-2015
• ICS: 65.080 - Fertilizers
• Technical Committee: ISO/TC 134 - Fertilizers, soil conditioners and beneficial substances
• Drafting Committee: ISO/TC 134 - Fertilizers, soil conditioners and beneficial substances
• Current Stage: 9093 - International Standard confirmed
• Completion Date: 06-Sep-2020

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 17323
First edition
2015-06-01
Fertilizers and soil conditioners —
Sulfur Coated Urea (SCU) — General
requirements
Matières fertilisantes — Urée enrobée de soufre (SCU) — Exigences
générales
Reference number
ISO 17323:2015(E)
©
ISO 2015

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ISO 17323:2015(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2015, Published in Switzerland
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ii © ISO 2015 – All rights reserved

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ISO 17323:2015(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 2
4.1 Appearance . 2
4.2 Requirement of sulfur coated urea . 2
5 Sampling and preparation of test sample . 2
5.1 Sampling method . 2
5.1.1 Products in bags . 2
5.1.2 Products in bulk . . . 2
5.2 Reduction of samples . 3
5.3 Test sample preparation . 3
6 Marking and labelling . 3
7 Packaging, transport, and storage . 4
Annex A (informative) Some examples for SCU . 5
Bibliography . 6
© ISO 2015 – All rights reserved iii

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ISO 17323:2015(E)

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
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organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
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patent rights identified during the development of the document will be in the Introduction and/or on
the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT), see the following URL: Foreword — Supplementary information.
The committee responsible for this document is ISO/TC 134, Fertilizers and soil conditioners.
iv © ISO 2015 – All rights reserved

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ISO 17323:2015(E)

Introduction
Sulfur Coated Urea (SCU) is a coated slow release fertilizer consisting of urea particles coated with
sulfur, which was first developed by the Tennessee Valley Authority’s National Fertilizer Development
Center (TVA/NFDC), Alabama in 1961, and produced commercially in 1967. SCU is made by coating urea
with sulfur and sealant. The main coating material of SCU is sulfur. Sulfur is insoluble in water and its
chemical properties are stable, thus it is an impermeable coating material. In addition, sulfur itself is a
secondary nutrient and it does not pollute the soil when applied appropriately.
This International Standard specifies general requirements, sampling, and preparation of test sample,
marking and labelling, packaging, transport, and storage for SCU.
NOTE Some countries or regions might have published other standards covering requirements for SCU.
© ISO 2015 – All rights reserved v

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INTERNATIONAL STANDARD ISO 17323:2015(E)
Fertilizers and soil conditioners — Sulfur Coated Urea
(SCU) — General requirements
1 Scope
This International Standard specifies general requirements, sampling and preparation of test sample,
marking and labelling, packaging, transport, and storage for SCU.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 7409, Fertilizers — Marking — Presentation a
...