This Standard 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). Microbiological attack on the coating (e.g. sulfur coated fertilizers) and the consequences thereof are not measurable by the technique described.
DS/EN 13266:2002 history
2002DS/EN 13266:2002 Slow-release fertilizers - Determination of the release of nutrients - Method for coated fertilizers