DIN EN 15705 : 2010 Title: Fertilizers - Determination of urea condensates using high-performance liquid chromatography (HPLC) - Isobutylidenediurea and crotonylidenediurea (method A) and methylen-urea oligomers (method B) Year: 2010 Publisher: DIN Media GmbH Availability: Within 1-2 working days