This standard specifies two methods for determining the chlorine content of vinyl chloride homopolymers and copolymers containing no plasticizers or additives, that is: - Method A (burning bomb); - Method B (burning bottle).

This Standard specifies the primary, secondary, and fifth sampling plans and sampling procedures based on the rejection quality level (expressed as the percentage of rejected products or the number of rejected products per hundred units) as the quality indicator. It is applicable to the inspection for process stability.

This Standard specifies a method of determining the grammage of paper and board. This Standard applies to various papers and boards.

This Standard specifies the method of using the hand-feeling softness tester to determine the softness of paper. This Standard is applicable to various wrinkle toilet paper, tissue paper and its derivatives, as well as other papers that require softness.

This Part of GB/T 5137 specifies the test methods of safety glazing materials used on road vehicles - radiation, high temperature, humidity, fire and simulated weathering resistance. This Part applies to automotive safety glass. It includes those glass products which are processed by various types of safety glass or which are combined of glass and other materials.

This standard specifies the requirements for black oxide films on iron and steel. Black oxide film can be used to reduce friction between sliding surfaces or bearing surfaces, or for decoration, or to reduce light reflection. This film can be used wherever a black surface is required, with or without additional anticorrosion treatment; even with additional anti-corrosion treatment, it can only achieve very limited corrosion protection under mildly corrosive conditions.

The standard of this method applies to the test of the tack of pressure sensitive adhesive tapes and those products similar to pressure sensitive adhesive tapes.