This European Standard defines the general requirements applicable to the specification of all types of glass mat reinforced polypropylene composite sheet (GMT) falling within the scope of this specification as defined in Part 1 of the standard including the sampling procedures, packaging, storage and labelling requirements. This European Standard describes the procedures to be followed in the preparation moulded plaques from which are cut the test specimens for the determination of mechanical properties as specified in Parts 1 & 3. This European Standard also defines the test methods to be used to determine the designated and specified properties given in Parts 1 & 3 respectively.