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ISO 23305:2020

Fortified milk powders, infant formula and adult nutritionals — Determination of total biotin by liquid chromatography coupled with immunoaffinity column clean-up extraction

Apr 14, 2020

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90.60     Sep 3, 2025

ISO

ISO/TC 34

International Standard

67.100.10  

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Scope

This document specifies a method for the quantitative determination of biotin and/or biocytin in fortified milk powders, infant formula and adult nutritionals in solid (i.e. powders) or liquid (i.e. ready-to-feed liquids and liquid concentrates) forms using liquid chromatography coupled with immunoaffinity column clean-up extraction.
Precision data from an interlaboratory study is given in Annex B. A comparison between data obtained with the method in this document and EN 15607 is given in Annex C.

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PUBLISHED
ISO 23305:2020
90.60 Close of review
Sep 3, 2025