Meat and meat products — Determination of nitrite content (Reference method)
NORMA vydaná dňa 1.9.1975
Označenie normy: ISO 2918:1975
Dátum vydania normy: 1.9.1975
Počet strán: 3
Približná hmotnosť: 9 g (0.02 libier)
Krajina: Medzinárodná technická norma
Kategória: Technické normy ISO
Description / Abstract: The method consists in extracting of a test portion with hot water, precipitating of proteine and filtrating. In presence of nitrits formation of a red cloured complex by adding sulfanilamide and naphthylethylenediamine hydrochloride, and photometric measurement at a wavelength of 538 nm.