ISO 5378:1978

Starches and derived products — Determination of nitrogen content by the Kjeldahl method — Spectrophotometric method

Publication date: 1 qer 1978

General information

Current stage: 90.60 Effective date: 4 qer 2024

Originator: ISO

Owner: ISO/TC 93

Type: International Standard

ICS: 67.180.20

Gjuha: frëngjisht anglisht

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Statusi: Publikuar

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Scope

Destruction of organic matter by sulphuric acid in the presence of a compound catalyst (see ISO 1871), alkalization of the reaction products, destillation of the liberated ammonia and collection in a sulphuric acid solution, followed by measuring of the ammonium salt formed after the addition of Nessler reagent. The method is provided for contents less than 0,025 % (m/m). For greater contents, see ISO 3188.

Life cycle

NOW

PUBLISHED
ISO 5378:1978
90.60 Close of review
4 qer 2024

REVISED BY

ABANDON
ISO/PWI 5378

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