This standard specifies a method for determining the extraction rate of polyethylene terephthalate (PET) films, tested using organic solvents. It is suitable for evaluating the extraction properties of PET films under specific conditions, including Sample Handling, solvent selection and determination steps. The standard aims to determine the Stability and safety of the film in practical applications, especially in applications involving food contact or Miscellaneous applications where chemical stability needs to be assessed, to ensure that it meets relevant safety standards.