ISO 6490-1:1985

Current Revision
Animal feeding stuffs - Determination of calcium content - Part 1 : Titrimetric method

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ISO 6490-1:1985

Animal feeding stuffs - Determination of calcium content - Part 1 : Titrimetric method

PUBLISH DATE 1985
ISO 6490-1:1985

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.

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