Liquefied petroleum gases; Corrosiveness to copper; Copper strip test

This technical specification outlines a method for determining the corrosive sulfur content in liquefied petroleum gas through the copper strip test. The procedure involves exposing a polished copper strip to the gas sample under controlled temperature and time conditions, followed by a visual comparison of the strip's surface discoloration against a standard reference scale. The results provide a qualitative assessment of the gas's potential to cause corrosion in metallic components used during storage, transportation, or consumer applications. The test is particularly relevant for ensuring product quality and preventing damage to equipment made of copper or copper alloys. The methodology adheres to established laboratory practices for evaluating fuel purity. This approach helps manufacturers and regulators verify that the gas meets specific purity requirements before distribution. The test serves as a critical quality control step within the broader framework of fuel safety standards. By identifying corrosive elements early, the procedure supports the maintenance of infrastructure integrity and operational safety across the energy supply chain.