YBB 0009-2003 in English

This standard provides a method for determining the water vapor transmission rate of packaging materials. It outlines the procedures, equipment, and conditions necessary to conduct the test accurately. The method is designed to ensure consistency and reliability in measuring the ability of packaging materials to allow water vapor to pass through them. The standard specifies the parameters and conditions under which the test should be performed, including temperature and humidity control. It also includes guidelines for calculating and reporting the results. The document is intended for use by manufacturers, regulators, and quality control personnel involved in the evaluation of packaging materials.