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ISO 937:1978

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

Standard Details

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.

General Information

Status : WITHDRAWN
Standard Type: Main
Document No: ISO 937:1978
Document Year: 1978
Pages: 3
Edition: 1
  • Section Volume:
  • ISO/TC 34/SC 6. Meat, poultry, fish, eggs and their products

Life Cycle

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WITHDRAWN
ISO 937:1978
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