SSH EN ISO 5378:1998

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

Publication date: Jan 6, 1998

General information

Current stage: 60.60 Effective date: Jan 6, 1998

Originator: DPS

Owner: DPS/KT 275

Type: European Norm

ICS: 67.180.20

Languages: English

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Status: Published

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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.

SSH EN ISO 5378:1998

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

General information

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Scope

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Adopted from EN ISO 5378:1994