本文件规定了测定无机肥料中以下特定营养素含量的方法参考: -总氮含量；-氨态氮含量硝酸氮含量尿素氮含量异丁基二脲（IBDU）和巴豆酰二脲（CDU）中的氮含量氰胺氮含量亚甲基脲氮含量（和脲醛，如适用）；-总磷含量；-水溶性磷含量中性柠檬酸铵可溶性磷含量水溶性钾含量总镁含量；-水溶性镁含量总钙含量；-水溶性钙含量总硫含量；-水溶性硫含量总钠含量；-水溶性钠含量。 本文件适用于分类为PFC 1（C）和PFC 7的欧盟化肥产品，只要混合物仅包括法规（EU）2019/1009[1]中规定的分类为PFC 1（C）、PFC 2和PFC 5的欧盟化肥产品。

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;— 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 [1].