ČSN P CEN/TS 17757 (654920)

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Fertilizers

Annotation of standard text ČSN P CEN/TS 17757 (654920):

This document specifies references to methods for the determination of the content of the followingspecific nutrients in inorganic fertilizers:

• - the total nitrogen content;
• - the ammoniacal nitrogen content;
• - the nitric nitrogen content;
• - the urea nitrogen content;
• - the content of nitrogen from isobutylidenediurea (IBDU) and crotonylidenediurea (CDU);
• - the cyanamide nitrogen content;
• - the methylene-urea nitrogen content (and urea formaldehyde, if applicable);
• - the total phosphorus content;
• - the water-soluble phosphorus content;
• - the neutral ammonium citrate soluble phosphorus content;
• - the water-soluble potassium content;
• - the total magnesium content;
• - the water-soluble magnesium content;
• - the total calcium content;
• - the water-soluble calcium content;
• - the total sulfur content;
• - the water-soluble sulfur content;
• - the total sodium content;
• - the water-soluble sodium content.

This document is applicable to EU fertilizing products classified as PFC 1(C) and PFC 7 as long as the blend only consists of EU fertilizing products classified as PFC 1(C), PFC 2 and PFC 5 as specified in the Regulation (EU) 2019/1009