Carbon dioxide transmission rate explained

Carbon dioxide transmission rate (COTR) is the measurement of the amount of carbon dioxide gas that passes through a substance over a given period. It is mostly carried out on non-porous materials, where the mode of transport is diffusion, but there are a growing number of applications where the transmission rate also depends on flow through apertures of some description.

See also

• Moisture vapor transmission rate
• Permeation
• Oxygen transmission rate
• Packaging

Further reading

• Yam, K. L., "Encyclopedia of Packaging Technology", John Wiley & Sons, 2009,
• Massey, L. K., "Permeability Properties of Plastics and Elastomers", 2003, Andrew Publishing,

Standards

• ASTM D1434 - Standard Test Method for Determining Gas Permeability Characteristics of Plastic Film and Sheeting
• ASTM F1115 - Standard Test Method for Determining the Carbon Dioxide Loss of Beverage Containers
• ASTM F2476 - Test Method for the Determination of Carbon Dioxide Gas Transmission Rate (Co 2TR) Through Barrier Materials Using An Infrared Detector