Rubber or Plastics Coated Fabrics-Methods of Test - Part 21 Measurement of Gas Permeability

This standard outlines the procedures for measuring the gas permeability of coated fabrics made from rubber or plastic. It provides detailed guidelines on the equipment, test conditions, and methodologies required to accurately determine the rate at which gases pass through the material. The document specifies the parameters that should be controlled during testing, including temperature, pressure, and the type of gas used. It also includes information on sample preparation, calibration of instruments, and the calculation of results. The standard ensures consistency in testing practices and facilitates the comparison of results across different laboratories. It is intended for use by manufacturers, researchers, and quality control personnel involved in the production and evaluation of coated fabrics.