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Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
90.20 Standard under periodical review
Fertilizers - Determination of urease inhibitor N-(n-butyl)thiophosphoric triamide (NBPT) using high-performance liquid chromatography (HPLC)
90.20 Standard under periodical review
Liming materials - Determination of the breakdown of granulated calcium and calcium/magnesium carbonates under the influence of water
90.20 Standard under periodical review
Inorganic fertilizers - Determination of methylen-urea oligomers using high-performance liquid chromatography (HPLC)
60.60 Standard published
Fertilizers - Determination of sulfates content using three different methods
60.60 Standard published
Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
90.93 Standard confirmed
Fertilizers - Determination of 3-methylpyrazole (MP) using high-performance liquid chromatography (HPLC)
90.93 Standard confirmed
Fertilizers - Determination of calcium and formate in calcium foliar fertilizers
90.93 Standard confirmed
Fertilizers - Extraction of phosphorus soluble in 2 % formic acid
90.93 Standard confirmed
Fertilizers - Extraction of phosphorus soluble in 2 % citric acid
90.93 Standard confirmed
Fertilizers - Extraction of soluble phosphorus according to Petermann at 65 °C
90.93 Standard confirmed
Fertilizers - Extraction of soluble phosphorus according to Petermann at ambient temperature
90.93 Standard confirmed
Fertilizers - Extraction of phosphorus soluble in Joulie's alcaline ammonium citrate
90.93 Standard confirmed
Fertilizers - Determination of the fineness of grinding of soft natural phosphates
90.93 Standard confirmed
Fertilizers - Extraction of total sulfur present in various forms
90.93 Standard confirmed
Fertilizers - Extraction of water soluble sulfur where the sulfur is in various forms
90.93 Standard confirmed
Fertilizers - Determination of the fineness of grinding (dry procedure)
90.93 Standard confirmed