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 urea formaldehyde, IBDU and CDU, - the cyanamide nitrogen content, - the methylene-urea nitrogen content, - the total P2O5 content, - the water-soluble P2O5 content, - the neutral ammonium citrate soluble P2O5 content, - the formic acid soluble P2O5 content, - the total K2O content, - the water-soluble K2O content, - the total MgO content, - the water-soluble MgO content, - the total CaO content, - the water-soluble CaO content, - the total SO3 content, - the water-soluble SO3 content, - the total Na2O content, - the water-soluble Na2O content.