Workbenches for laboratories in educational institutions - Dimensions, safety and durability requirements and test methods; German version EN 13150:2020
Edition 2020-05

Fertilizers - Determination of urease inhibitor N-(n-butyl)thiophosphoric triamide (NBPT) using high-performance liquid chromatography (HPLC); German version EN 15688:2008
Edition 2008-11

Fertilizers - Determination of total nitrogen in urea; German version EN 15478:2009
Edition 2009-04

Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch; German version EN 15558:2009
Edition 2009-06

Fertilizers - Determination of 3-methylpyrazole (MP) using high-performance liquid chromatography (HPLC); German version EN 15905:2010
Edition 2010-11

Fertilizers - Determination of 1H-1,2,4-triazole in urea and in fertilizers containing urea - Method using high-performance liquid chromatography (HPLC); German version EN 16024:2011
Edition 2011-06

Fertilizers - Determination of 3,4-dimethyl-1H-pyrazole phosphate (DMPP) - Method using high-performance liquid chromatography (HPLC); German version EN 16328:2012
Edition 2013-02

Fertilizers - Extraction of total micro-nutrients in fertilizers using aqua regia; German version EN 16964:2018
Edition 2018-03

Fertilizers - Determination of N-(2-nitrophenyl)phosphoric triamide (2-NPT) in urea and fertilizers containing urea - Method using high-performance liquid chromatographie (HPLC); German version EN 16075:2011
Edition 2012-01

Fertilizers - Spectrophotometric determination of biuret in urea; German version EN 15479:2009
Edition 2009-04