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Crude Fiber:The sample is boiled for 35 minutes in dilutedsulphoric acid. After filtration and washingthe sample is boiled again for 35minites indiluted potassium hydroxide .After filtrationwashing and drying the residue is ashed at500 C .The difference in weight before andafter ashing is called crude fiber ..
chloride testDetermination of chloride in compound feedsand raw materials by potentiometric titrationwith silver nitrate using the Ag-electrode.
CRUD PROTEIN ACCORDINGKJELDAHLThe sample is mineralized by concentrated sulphoric acid in the presence of a catalyst. in this way it is transformed into ammonium sulphate. After an addition of hydroxide ,the solution is distilled and ammonical nitrogen is caught in diluted acid and determined by the titration method.