This standard BS EN 15688:2008 Fertilizers. Determination of urease inhibitor N-(n-butyl)thiophosphoric triamide (NBPT) using high-performance liquid chromatography (HPLC) is classified in these ICS categories:
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.
