Name: EN ISO 5378:1994
Brand: CEN

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

Published date

08-25-1994

Publisher

Comite Europeen de Normalisation

Foreword
1 SCOPE AND FIELD OF APPLICATION
2 REFERENCES
3 DEFINITIONS
4 PRINCIPLE
5 REAGENTS
6 APPARATUS
7 PROCEDURE
8 EXPRESSION OF RESULTS
9 TEST REPORT

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.

Committee	CEN/BT
DocumentType	Standard
PublisherName	Comite Europeen de Normalisation
Status	Current

Standards	Relationship
UNI EN ISO 5378 : 1995	Identical
ISO 5378:1978	Identical
NF EN ISO 5378 : 1994	Identical
NEN EN ISO 5378 : 1994	Identical
I.S. EN ISO 5378:1995	Identical
UNE-EN ISO 5378:1995	Identical
NBN EN ISO 5378 : 1994	Identical
BS EN ISO 5378:1994	Identical
PN EN ISO 5378 : 2000	Identical
SN EN ISO 5378 : 1994	Identical
NS EN ISO 5378 : 1ED 1994	Identical
DIN EN ISO 5378:1994-10	Identical

ISO 1871:2009	Food and feed products General guidelines for the determination of nitrogen by the Kjeldahl method
ISO 3188:1978	Starches and derived products — Determination of nitrogen content by the Kjeldahl method — Titrimetric method
ISO 1227:1979	Starch, including derivatives and by-products — Vocabulary