ISO 937:1978

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

Publication date: 1 dhj 1978

95.99 Withdrawal of Standard 28 gush 2023

General information

Current stage: 95.99 Effective date: 28 gush 2023

Originator: ISO

Owner: ISO/TC 34/SC 6

Type: International Standard

ICS: 67.120.10

Gjuha: frëngjisht anglisht

Buying

Statusi: Shfuqizuar

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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

WITHDRAWN
ISO 937:1978
95.99 Withdrawal of Standard
28 gush 2023

REVISED BY

PUBLISHED
ISO 937:2023

National adoptions

SSH ISO 937:2000

DPS

Mish dhe produkte mishi. Përcaktimi i përmbajtjes së azotit (Metodë referimi)

95.99 Withdrawal of Standard

DPS/KT 302 më tepër