ISO 18642:2016 PDF

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.

ISO 18642:2016 Referenced Document

EN 13466-1:2001 Fertilizers - Determination of water content (Karl Fischer methods) Part 1: Methanol as extracting medium*， 2024-04-20 Update
EN 15478:2009 Fertilizers - Determination of total nitrogen in urea
EN 15479:2009 Fertilizers - Spectrophotometric determination of biuret in urea
ISO 18643:2016 Fertilizers and soil conditioners - Determination of biuret content of urea-based fertilizers - HPLC method
ISO 5315:1984 Fertilizers; Determination of total nitrogen content; Titrimetric method after distillation
ISO 7409:1984 Fertilizers; Marking; Presentation and declarations
ISO 7410:1983 Fertilizers and soil conditioners; Final samples; Practical arrangements
ISO 7742:1988 Solid fertilizers; reduction of samples
ISO 8157:2015 Fertilizers and soil conditioners - Vocabulary
ISO 8397:1988 Solid fertilizers and soil conditioners; test sieving
ISO 8633:1992 Solid fertilizers; simple sampling method for small lots

2016 ISO 18642:2016 Fertilizer and soil conditioners - Fertilizer grade urea - General requirements