Estimation of Crude Fibre in Feed Stuffs Calculator
Crude fiber is a term used to describe the fibrous food residue that is left over after it has been dissolved in the laboratory with certain harsh chemical solvents such as sulfuric acid and sodium hydroxide. Crude fiber is determined by laboratory analysis and is mainly composed of lignin, which is found in the tissues of plants and cellulose---basically a plant's skeleton. The residue left after successive extraction under closely specified conditions with petroleum ether, 1.25% sulphuric acid, and 1.25% sodium hydroxide, minus ash is termed as crude fibre.
Percentage of crude fibre = (Weight of silica crucible with contents before ashing * Weight of silica crucible with contents after ashing / Weight of sample