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SRPS ISO 937:1992

Meat and meat products — Determination of nitrogen content (Reference method)

Nov 18, 1992
Nov 18, 1992

General information

90.92     Feb 26, 2021

ISS

E034-6

International Standard

67.120.10  

Serbian  

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Scope

The method consists in digesting of a test portion with concentrated sulphuric acid, using copper(II) sulphate as a catalyst, to convert organic nitrogen to ammonia ions. Then alkalisation, distillation of the liberated ammonia into an excess of boric acid solution, titration with hydrochloric acid to determine the ammonia bound by the boric acid, and calculation of nitrogen content of the sample from the amount of ammonia produced.

Life cycle

NOW

PUBLISHED
SRPS ISO 937:1992
90.92 Standard to be revised
Feb 26, 2021

REVISED BY

PROJECT
prSRPS ISO 937:2024

Related project

Adopted from ISO 937:1978

National regulations and standards

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