American Society for Testing and Materials (ASTM). Current edition approved May 1, 2007. Published June 2007. Originally approved in 1953. Last previous edition approved in 2002 as D 1267 – 02. 5 p. This test method covers the determination of the gage vapor pressures of liquefied petroleum gas products at temperatures of 37.8°C (100°F) up to and including a test temperature of 70°C (158°F).