Fertilizer and soil conditioners -- Fertilizer grade urea -- General requirements

ISO 18642:2016 specifies the general requirements regarding testing methods, sampling and preparation of test sample, marking and labelling, package, transport, and storage of fertilizer grade urea. It is applicable to urea in solid form, e.g. granular, prilled, or pastilled, which is made by the reaction of ammonia with carbon dioxide. Urea can be classified by its intended use, industrial and/or agricultural. It is mainly used as fertilizer in the field of agriculture. It is only applicable to fertilizer grade urea in the field of agriculture.

Matières fertilisantes -- Engrais à l'urée -- Exigences générales

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Status
Published
Publication Date
06-Jul-2016
Current Stage
9020 - International Standard under periodical review
Start Date
15-Jul-2021
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INTERNATIONAL ISO
STANDARD 18642
First edition
2016-07-15
Fertilizer and soil conditioners —
Fertilizer grade urea — General
requirements
Matières fertilisantes — Engrais à l’urée — Exigences générales
Reference number
ISO 18642:2016(E)
ISO 2016
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ISO 18642:2016(E)
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© ISO 2016, Published in Switzerland

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ii © ISO 2016 – All rights reserved
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ISO 18642:2016(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Requirement ............................................................................................................................................................................................................. 2

5 Testing methods .................................................................................................................................................................................................... 2

6 Sampling and preparation of test sample .................................................................................................................................. 3

7 Marking and labelling ..................................................................................................................................................................................... 3

8 Package, transport, and storage ........................................................................................................................................................... 4

Bibliography ................................................................................................................................................................................................................................ 5

© ISO 2016 – All rights reserved iii
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ISO 18642:2016(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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electrotechnical standardization.

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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

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as well as information about ISO’s adherence to the World Trade Organization (WTO) principles in the

Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html

The committee responsible for this document is ISO/TC 134, Fertilizers and soil conditioners.

iv © ISO 2016 – All rights reserved
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ISO 18642:2016(E)
Introduction

Urea, also known as carbamide, is the world’s most widely used nitrogen fertilizer product. The

production of urea globally has reached 198 million tons and the volume of global trade has reached

45 million tons in the year 2013. About 85 % of the world’s production of urea is destined for use as a

nitrogen-release fertilizer. Urea has the highest nitrogen content of all solid nitrogenous fertilizers in

common use. The standard crop-nutrient rating of urea is 46-0-0.

For facilitating international fertilizer trade, it is necessary to have an international and general

standard for fertilizer grade urea.
© ISO 2016 – All rights reserved v
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INTERNATIONAL STANDARD ISO 18642:2016(E)
Fertilizer and soil conditioners — Fertilizer grade urea —
General requirements
1 Scope

This International Standard specifies the general requirements regarding testing methods, sampling

and preparation of test sample, marking and labelling, package, transport, and storage of fertilizer

grade urea.

This International Standard is applicable to urea in solid form, e.g. granular, prilled, or pastilled, which

is made by the reaction of ammonia with carbon dioxide. Urea can be classified by its intended use,

industrial and/or agricultural. It is mainly used as fertilizer in the field of agriculture. This International

Standard is only applicable to fertilizer grade urea in the field of agriculture.

2 Normative references
The following documents, in whole
...

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