BS EN 497. Specification for dedicated liquefied petroleum gas appliances. Multi purpose boiling burners for outdoor use|Instructions for use, Strength of materials, Containers, Gas-powered devices, Performance, Stability, Performance testing, Testing conditions, External, Burners, Liquefied petroleum gas, Chemical composition, Temperature rise, Mechanical testing, Combustion products, Marking, Mathematical calculations, Gas cylinders, Cooking appliances, Fire safety, Leak tests, Test pressure, Gas valves, Classification systems, Test equipment, Barbecues