ADOPTED_FROM:EN 15477:2009 This European Standard specifies a method for the determination of water-soluble potassium, which is applicable to all potassium fertilizers listed in Annex I of the Regulation (EC) No 2003/2003 [3].
NS-EN 15477:2009 history
2009NS-EN 15477:2009 Fertilizers — Determination of the water-soluble potassium content