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ISO 5378:1978

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

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

PUBLISH DATE 1978
ISO 5378:1978

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.

SDO ISO: International Organization for Standardization
Document Number ISO 5378
Publication Date June 15, 1978
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 93
Publish Date Document Id Type View
June 15, 1978 ISO 5378:1978 Revision