Reference number
ISO 5378:1978
International Standard
ISO 5378:1978
Starches and derived products — Determination of nitrogen content by the Kjeldahl method — Spectrophotometric method
Edition 1
1978-06
Read sample
ISO 5378:1978
11420
Published (Edition 1, 1978)
This publication was last reviewed and confirmed in 2024. Therefore this version remains current.

ISO 5378:1978

ISO 5378:1978
11420
Language
Format
CHF 42
Convert Swiss francs (CHF) to your currency

Abstract

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.

General information

  •  : Published
     : 1978-06
    : International Standard confirmed [90.93]
  •  : 1
     : 3
  • ISO/TC 93
    67.180.20 
  • RSS updates

Life cycle

Got a question?

Check out our Help and Support