90.93 Standard confirmed Dec 11, 2021
ISO
ISO/TC 34/SC 10 Animal feeding stuffs
International Standard
65.120 Animal feeding stuffs
The method is applicable to products having contents greater than 1 g/kg. It consists in ashing of a test portion, treatment of the ash with hydrochloric acid and precipitation of the calcium as calcium oxalate, dissolution of the precipitation in sulfuric acid and titration with standard volumetric potassium permanganate solution of the oxalic acid formed.
PUBLISHED
ISO 6490-1:1985
90.93
Standard confirmed
Dec 11, 2021