International Standard
ISO 5311:2026
Fertilizers — Determination of bulk density (tapped)
Reference number
ISO 5311:2026
Edition 4
2026-02
© ISO 2026
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Published (Edition 4, 2026)

ISO 5311:2026

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Abstract

This document specifies two methods for the determination of the bulk density (tapped) of solid fertilizers:

  • the machine-tapping method (method 1);
  • the hand-tapping method (method 2).

These methods are applicable to dry fertilizers only.

Neither method is suitable for materials which contain a large proportion of particles exceeding 5 mm in diameter.

Method 2 is applicable only to spherical granules and to prills. It is not applicable to sharp-edged grains.

NOTE            Because of the differences in tapping technique, the two methods will not necessarily give the same value for the bulk density (tapped).

General information

  • Status
     : Published
    Publication date
     : 2026-02
    Stage
    : International Standard published [60.60]
  • Edition
     : 4
    Number of pages
     : 5
  • Technical Committee :
    ISO/TC 134
    ICS :
    65.080 
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Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goal

2
Zero Hunger

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