This standard is applicable to the determination of the residue content of liquefied petroleum gas after volatilization at 38°C. Note: This method will have errors when used to measure alcohol-containing liquefied petroleum gas. Alcohols are added to liquefied petroleum gas to improve its frost resistance.
SY/T 7509-1996 history
2014SY/T 7509-2014 Test method for residues in liquefied petroleum gases