Describes methods of preparing specimens and determining characteristic properties of ultra-high molecular weight polyethylene (PE-UHMW) moulding materials as specified in DIN 16783 Part 1, and other properties with the aim of achieving reproducible results when such properties are measured. Properties of products made of such materials are influenced by the type of moulding materials used, component design and final condition of the products, these in turn being dependent on manufacturing conditions and type of subsequent treatment applied. Values obtained using the test methods set out in this standard are only applicable to specimens of the form specified, prepared as specified, and not to specimens of different dimensions or prepared by different procedures.