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BSI BS ISO 21263:2017

Slow-release fertilizers. Determination of the release of the nutrients. Method for coated fertilizers
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BSI BS ISO 21263:2017

Slow-release fertilizers. Determination of the release of the nutrients. Method for coated fertilizers

PUBLISH DATE 2018
PAGES 16
BSI BS ISO 21263:2017

This document specifies a method for the determination of the slow release properties of nutrients from coated fertilizers. pH-dependent hydrolysis and degradation by biological or microbial mechanisms are excluded.

The specified method is only applicable to products releasing any nutrients by means of a non-biological process (i.e. those where the nutrients are released by a physical mechanism). Microbial attack on the coating (e.g. sulfur coated fertilizers) and the consequences thereof are not measurable by the technique described.

This method involves a lengthy process which may not be appropriate for day to day testing purposes. Accelerated methods can be used provided they are correlated with this document. An example of such an accelerated method is described in Annex B. Regression analysis can also be used for this purpose.

SDO BSI: British Standards Institution
Document Number ISO 21263
Publication Date Jan. 11, 2018
Language en - English
Page Count
Revision Level
Supercedes
Committee CII/37
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