Meat and meat products — Determination of nitrate content (Reference method)
NORMA vydaná dňa 1.9.1975
Designation standards: ISO 3091:1975
Publication date standards: 1.9.1975
The number of pages: 5
Approximate weight : 15 g (0.03 lbs)
Country: International technical standard
Kategória: Technické normy ISO
Description / Abstract: The method consists in extracting of a test portion with hot water, precipitating of proteins and filtrating. Reduction of the extracted nitrates into nitrites by metallic cadmium. Formation of a red colouration by adding of sulfanilamide and nphthyl ethylenediamine hydrochloride and photometric measurement at a wavelength of 538 nm.