ISO 5024 pdf download.Petroleum liquids and liquefied petroleum gases — Measurement — Standard reference conditions 1 Scope This International Standard specifies the standard reference conditions of pressure and temperature for measurements carried out on crude petroleum and its products, including liquefied petroleum gases. It excludes natural gas. NOTE Standard reference conditions for natural gas are given in ISO 1 3443 1 ) . 2 Standard reference conditions The standard reference conditions of pressure and temperature for use in measurements on crude petroleum and its products shall be 1 01 ,325 kPa 2) (absolute) and 1 5 °C, with the exception of liquid hydrocarbons having a vapour pressure greater than atmospheric at 1 5 °C, in which case the standard pressure shall be equilibrium vapour pressure at 1 5 °C.
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