BS 3412:1992 pdf free.Methods of specifying general purpose polyethylene materials for moulding and extrusion. This British Standard gives a method for specifying the composition and property requirements of ethylene homopolymers and ethylene copolymers having a maximum content of other 1-olefin monomers of less than 50 0% (m/m). In addition, those with a content of non-olefinic monomers with functional groups up...