ISO 4099:1984Withdrawn

Cheese — Determination of nitrate and nitrite contents — Method by cadmium reduction and photometry

Fromages — Détermination des teneurs en nitrates et en nitrites — Méthode par réduction au cadmium et photométrie

Abstract / scope

Describes a method suitable for hard, semi-hard and soft cheeses of various ages and for processed cheese. The principle is based on extraction of the cheese with warm water, precipitation of the fat and proteins, filtration and reduction of the nitrate in a portion of the filtrate to nitrite by means of copperized cadmium. The detection limits of the method are 5 mg of nitrate per kilogram and 0,5 mg of nitrite per kilogram.

Life cycle

Replaces

ISO 4099:1978WithdrawnCheese — Determination of nitrate and nitrite contents — Method by cadmium reduction and photometryInternational Standard · Published 1 Nov 1978 · ISO/TC 34/SC 5

Replaced by

ISO 14673-1:2001WithdrawnMilk and milk products — Determination of nitrate and nitrite contents — Part 1: Method using cadmium reduction and spectrometryInternational Standard · Published 1 Nov 2001 · ISO/TC 34/SC 5 ISO 14673-2:2001WithdrawnMilk and milk products — Determination of nitrate and nitrite contents — Part 2: Method using segmented flow analysis (Routine method)International Standard · Published 1 Nov 2001 · ISO/TC 34/SC 5 ISO 14673-3:2001WithdrawnMilk and milk products — Determination of nitrate and nitrite contents — Part 3: Method using cadmium reduction and flow injection analysis with in-line dialysis (Routine method)International Standard · Published 1 Nov 2001 · ISO/TC 34/SC 5