The ASTM F34-13 (2023) standard provides guidance on the construction of liquid extraction test cells for flexible barrier materials. This test method is suitable for extracting components from flexible barrier materials by appropriate extracts, including food simulation solvents, to evaluate the amount of extractable content in the material. This test cell can be used to meet the requirements of U.S. LIANBANG regulations (e.g., 21 CFR 176.170, 177.1330, etc.) for the evaluation of food contact materials. This standard helps ensure the safety and compliance of flexible barrier materials in practical applications.