A high degree of precision and universality make the Kjeldahl method the world’s leading standard method for determining the nitrogen content in food and feedstuffs as well as in soil and water samples. It can be used flexibly and universally, including with inhomogeneous sample material, and always provides reliable results. Some application examples:
ISO 1871 Food and feed products(General Guidelines)
AOAC 2001.11 Crude Protein in animal feed, forage (plant tissue), grain and oil seeds
EC No. 152/2009 Methods of sampling and analysis for the official control of feed