PD CEN/TS 17757:2022 PDF

1   Scope This document specifies references to methods for the determination of the content of the following specific 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;