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The use and value of a fleece or lot of wool are affected almost as much by the distribution of the individual fiber diameters as the average fiber diameter or grade. The more uniform the individual fibers are in diameter, the more valuable.
A number of methods are available for characterization of the structural, physical, and chemical properties of fibers. Various methods are used for fiber identification like microscopic methods, solubility, heating and burning method, density, and staining etc. End-use property characterization methods often involve the use of laboratory techniques which are adapted to simulate actual conditions of average wear on the textile or that can predict performance in end-use.