Fertilizers. Determination of ammoniacal nitrogen content in presence of other substances which realise ammonia when treated with sodium hydroxide. Tetrimetric method
NORMA vydaná dňa 1.7.1992
Designation standards: GOST 28990-91
Publication date standards: 1.7.1992
The number of pages: 10
Approximate weight : 30 g (0.07 lbs)
Country: Russian technical standard
Kategória: Technické normy GOST