Renewable Synthesized Iso-Paraffinic fuel has now been included in ASTM International standard D7566, Specification for Aviation Turbine Fuel Containing Synthesized Hydrocarbons. Standard has been revised to incorporate international material specifications for SIP, or low carbon aviation fuel, ensuring fuel quality equal or superior to petroleum-derived aviation turbine fuels. Primary users include fuel producers/distributors, aircraft, and fuel system/turbine engine manufacturers.