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ISO 5378:1978

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

Jun 1, 1978

General information

90.93     Sep 11, 2024

ISO

ISO/TC 93

International Standard

67.180.20  

French   English  

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Published

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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
90.93 Standard confirmed
Sep 11, 2024

REVISED BY

ABANDON
ISO/PWI 5378

National adoptions

SRPS ISO 5378:2002  
ISS

Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophotometric method (ISO 5378:1978)

95.99   Withdrawal of Standard

E034-4 more

SRPS EN ISO 5378:2008  
ISS

Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophotometric method (ISO 5378:1978)

90.93   Standard confirmed

E034-4 more