DIN ISO 9622:2017-04

This International Standard provides guidance on the quantitative compositional analysis of milk and liquid milk products, such as raw milk, processed milk, cream and whey, by measurement of the absorption of mid-infrared radiation. The guidance described is applicable to the analysis of cow's milk. The guidance is also applicable to the analysis of milk of other species (goat, ewe, buffalo, etcetera) and derived liquid milk products, provided that adequate calibrations are generated for each application and adequate control procedures are in place. The application is limited to lower viscosity products that can be pumped through the flow system of the analyzer and to analytes that do not result in optical saturation at the specific wavelengths being utilized. This document has been prepared by Subcommittee SC 5 "Milk and milk products" (secretariat: NEN, The Netherlands) of Technical Committee ISO/TC 34 "Food products" (secretariat: AFNOR, France) in collaboration with the International Dairy Federation (IDF). The responsible German standardization committee is Working Committee NA 057-05-13 AA "Milch und Milchprodukte - Probenahme- und Untersuchungsverfahren" ("Milk and milk products - Methods of sampling and analysis") at DIN Standards Committee Food and Agricultural Products (NAL).