IDF/RM 25-2008
Milk and milk products - Determination of nitrogen content and crude protein calculation - Kjeldahl method

Standard No.

IDF/RM 25-2008

Release Date

2008

Published By

International Dairy Federation (IDF)

Latest

IDF/RM 25-2008

Replace

IDF 25-1964

Scope

This Technical Specification specifies a method for the determination of the nitrogen content and crude protein content by calculation in processed cheese products by using the Kjeldahl principle, both traditional and block digestion methods. NOTE Inaccurate crude protein results are obtained if non-dairy sources of nitrogen are present in the specified processed cheese products.

IDF/RM 25-2008 Referenced Document

• ISO 1042 Laboratory glassware - One-mark volumetric flasks
• ISO 385 Laboratory glassware - Burettes
• ISO 4788 Laboratory glassware - Graduated measuring cylinders

IDF/RM 25-2008 history

• 2008 IDF/RM 25-2008 Milk and milk products - Determination of nitrogen content and crude protein calculation - Kjeldahl method
• 0000 IDF 25-1964