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ISO 20635:2018

Infant formula and adult nutritionals — Determination of vitamin C by (ultra) high performance liquid chromatography with ultraviolet detection ((U)HPLC-UV) ISO 20635:2018

Publication date:   Jul 2, 2018

General information

90.93   Standard confirmed   Dec 20, 2023

ISO

ISO/TC 34 Food products

International Standard

67.050   General methods of tests and analysis for food products

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Scope

This document specifies a method for the determination of vitamin C (L-ascorbic acid) present in all forms of infant and adult formulas (powders, ready-to-feed liquids and liquid concentrates), using (ultra) high performance liquid chromatography with ultraviolet detection (U)HPLC-UV. The application range runs from 2,5 mg/100 g (limit of quantification) to 50 mg/100 g expressed in the product as consumed. The method is able to distinguish between D-ascorbic acid (isoascorbic- or erythorbic acid) and L-ascorbic acid.

Life cycle

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PUBLISHED
ISO 20635:2018
90.93 Standard confirmed
Dec 20, 2023




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