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ISO 937:1978

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

Dec 1, 1978
95.99 Withdrawal of Standard   Aug 28, 2023

General information

95.99     Aug 28, 2023

ISO

ISO/TC 34/SC 6

International Standard

67.120.10  

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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WITHDRAWN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
Aug 28, 2023

REVISED BY

PUBLISHED
ISO 937:2023

National adoptions

SSH ISO 937:2000  
DPS

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

95.99 Withdrawal of Standard

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