GSO ISO 5983-2:2007
Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 2: Block digestion/steam distillation method

Standard No.

GSO ISO 5983-2:2007

Release Date

2007

Published By

GSO

Latest

GSO ISO 5983-2:2007

Scope

This part of ISO 5983 specifies a method for the determination of nitrogen content of animal feeding stuffs according to the Kjeldahl method, and a method for the calculation of the crude protein content. It concerns a semi-micro rapid routine method using block-digestion, copper catalyst and steam distillation into boric acid. The method is applicable to the determination of greater than 0,5 % Kjeldahl nitrogen in animal feeding stuffs, pet foods and their raw materials. The method does not measure oxidized forms of nitrogen nor heterocyclic nitrogen compounds. The method does not distinguish between protein nitrogen and non-protein nitrogen

GSO ISO 5983-2:2007 history

• 2007 GSO ISO 5983-2:2007 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 2: Block digestion/steam distillation method