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Standard
ISO 22662
IDF 198
Second edition
Milk and milk products —
2024-03
Determination of lactose content
by high-performance liquid
chromatography (reference
method)
Lait et produits laitiers — Détermination de la teneur en lactose
par chromatographie liquide haute performance (méthode de
référence)
Reference numbers
ISO 22662:2024(en)
IDF 198:2024(en) © ISO and IDF 2024
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ISO 22662:2024(en)
IDF 198:2024(en)
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© ISO and IDF 2024
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Published in Switzerland
© ISO and IDF 2024 – All rights reserved
ii
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ISO 22662:2024(en)
IDF 198:2024(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagents . 1
6 Apparatus . 2
7 Sampling . 3
8 Preparation of test sample . 3
9 Procedure . 4
9.1 Preparation of the standard solution .4
9.2 Preparation of test portion .4
9.2.1 Fluid milk or dairy permeate test sample .4
9.2.2 Dairy powder test sample .4
9.2.3 Cream test sample .4
9.3 Preparation of filtrate .4
9.4 HPLC
...