ISO 18642:2016

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 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
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ISO 18642:2016(E)

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