This standard specifies the method for the determination of liquefied petroleum gas residues. This standard is applicable to the determination of residues after volatilization of liquefied petroleum gas at 38°C. This standard is not applicable to the determination of liquefied petroleum gas residues containing solid and insoluble impurities. Solid contaminants such as rust, scale or dirt will cause interference.
SY/T 7509-2014 history
2014SY/T 7509-2014 Test method for residues in liquefied petroleum gases