ISO 17997-2:2004
Milk - Determination of casein-nitrogen content - Part 2: Direct method

Standard No.

ISO 17997-2:2004

Release Date

2004

Published By

International Organization for Standardization (ISO)

Latest

ISO 17997-2:2004

Scope

This part of ISO 17997 | IDF 29 specifies a routine method for the direct determination of the casein-nitrogen content of bovine milk. The method can be modified for milk from other species or liquid dairy products. NOTE Casein nitrogen will decrease with milk storage time due to casein breakdown even at 4 ℃. The casein nitrogen of heat-treated milk will be artificially high because of whey-protein denaturation.

ISO 17997-2:2004 Referenced Document

• ISO 1042:1998 Laboratory glassware - One-mark volumetric flasks
• ISO 648:1977 Laboratory glassware; One-mark pipettes

ISO 17997-2:2004 history

• 2004 ISO 17997-2:2004 Milk - Determination of casein-nitrogen content - Part 2: Direct method