The standard Vapometer is used for determining the water vapor permeability of sheet materials such as specialty paper grades, polyethylene, building material, leather, weatherproof clothing, vinyl, foil and laminates. This property is essential in determining if a material is moisture proof or has the ability to protect contents from the transmission of water vapor.
The Water Vapor Permeability Cups are available in a wide range of sizes for mechanical and wax sealing. They can be used at any temperature or relative humidity to ensure product performance across different conditions.
Test Procedure to Measure the Fuel Permeability of Materials by the Cup Weight Loss Method. The standard covers the procedure for measuring the permeation of fuel or fuel surrogates through test samples of elastomeric, plastic or composite materials, up to 3mm thick.
Standard permeation test temperatures are 40° C and 60° C. Standard test fluids are Fuel C, Fuel CE10, and Fuel CM15.