BS EN 15705:2010
肥料.利用高效液相色谱法(HPLC)进行尿素固化物测定.异丁叉双尿素和丁烯叉二脲(方法A)以及次甲基尿素低聚物(方法B)
Fertilizers - Determination of urea condensates using high-performance liquid chromatography (HPLC) - Isobutylidenediurea and crotonylidenediurea (method A) and methylen-urea oligomers (method B)