Organo-mineral fertilizers - Extraction of phosphorus by formic acid
60.60 Standard published
Organo-mineral fertilizers - Extraction of phosphorus, which is soluble in neutral ammonium citrate
60.60 Standard published
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 - 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 - Extraction of phosphorus soluble in mineral acids
90.93 Standard confirmed
Fertilizers - Extraction of phosphorus which is soluble in neutral ammonium citrate
90.93 Standard confirmed
Fertilizers - Extraction of total calcium, total magnesium, total sodium and total sulfur in the forms of sulfates
90.93 Standard confirmed
Fertilizers - Extraction of water-soluble calcium, magnesium, sodium and sulfur in the form of sulfates
90.93 Standard confirmed
Fertilizers - Extraction of water soluble micro-nutrients in fertilizers and removal of organic compounds from fertilizer extracts
90.93 Standard confirmed
Fertilizers - Extraction of total micro-nutrients in fertilizers using aqua regia
90.93 Standard confirmed
