This European Standard specifies several methods for preparing laboratory samples of fibres, yarns or fabrics and presents a limited treatment of the problem of drawing specimens for testing.The principle of each method is given atThe beginning of the clause dealing withThe method.It is not possible forThe coverage of each individual procedure to be fully comprehensive; in many instances,The selection of test samples or test specimens is necessarily covered byThe appropriate method of test.The selection of length-biased samples is not withinThe scope of this standard, nor are particular procedures for determination of commercial weights or moisture content.Annex A andThe tables are given inThis standard for general guidance in determiningThe size of the test sample to be taken in order thatThe determined sample mean has given confidence limits
EN 12751:1999 history
1999EN 12751:1999 Textiles - Sampling of fibres, yarns and fabrics for testing