This International Standard specifies a method for determining the content of soluble proteins in a potassium hydroxide solution in soybean, rapeseed and sunflower meals, by analysis according to the Kjeldahl method as specified in is 5983-1 and is 5983 -2.
ISO 5502 Oilseed residues; preparation of test samples
ISO 565 Test sieves; metal wire cloth, perforated metal plate and electroformed sheet; nominal sizes of openings
ISO 5983-1 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method; Technical Corrigendum 1
ISO 5983-2 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 2: Block digestion and steam distillation method
NF V03-950:2014 history
2014NF V03-950:2014 Oilseed meals - Determination of soluble protein in potassium hydroxide solution