ISO 12080-1:2009 PDF
Dried skimmed milk — Determination of vitamin A content — Part 1: Colorimetric method
Dried skimmed milk — Determination of vitamin A content — Part 1: Colorimetric method
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 8
- Дата публикации:
- 24 сентября 2009 г.
- Издание:
- ISO IS 12080 edition 2 version 1
- ICS:
- 67.100.10
ISO 12080-1|IDF 142-1:2009 specifies a colorimetric method for the determination of vitamin A in dried skimmed milk containing at least 10 IU (International Units) of vitamin A per gram.
Abstract
Overview
ISO 12080-1:2009 / IDF 142-1:2009 specifies a for determining content in (samples containing at least ). The method is intended for laboratories that require a validated, equipment-lean alternative to chromatographic techniques. It describes sample preparation, saponification and extraction, reaction of the unsaponifiable fraction with trifluoroacetic acid, and measurement of absorbance at to quantify vitamin A (retinol) activity.
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