90.60 Close of review Sep 2, 2024
CEN
CEN/TC 260 Fertilizers and liming materials
European Norm
65.080 Fertilizers
This document specifies a method for the quantitative determination of the urease inhibitor N-(n-butyl)thiophosphoric triamide (NBPT) content in water-soluble matrices, i.e. urea based fertilizers using high performance liquid chromatography (HPLC).
NOTE Pure NBPT reference material is required as a standard for the quantitative calibration.
PUBLISHED
EN 15688:2008
90.60
Close of review
Sep 2, 2024