ISO 5378:1978 PDF
Starches and derived products — Determination of nitrogen content by the Kjeldahl method — Spectrophotometric method
Open preview (PDF)Starches and derived products — Determination of nitrogen content by the Kjeldahl method — Spectrophotometric methodTitle (English):
ISO 5378:1978
Starches and derived products — Determination of nitrogen content by the Kjeldahl method — Spectrophotometric method
- Document status:
- Active
- Format:
- Electronic (PDF)
- Number of pages:
- 3
- Publication date:
- June 1, 1978
- Edition:
- ISO IS 5378 edition 1 version 1
- ICS:
- 67.180.20
Description (English):
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.
Technical details
- Technical committee
- ISO/TC 93 - Starch (including derivatives and by-products)
- SKU
- ISO 5378:1978
