Carbon Dioxide Gas and Liquid Carbon Dioxide Carbon dioxide uses Because of its large-scale availability, carbon dioxide gas (CO2) and liquid CO2 can be utilized in a large number of industries. The food industry, for example, uses carbon dioxide in carbonated beverage manufacturing, freezing, and modified atmosphere packaging. Likewise, carbon dioxide is known as an “active gas” in shielding the arc in gas metal arc welding, (GMAW/MIG welding) either on its own or in blends of helium and argon. Carbon dioxide’s acidic properties, when blended with water, cause it to be a successful water treatment additive for pH control. Higher purities of compressed CO2, from Dry to Ultra High Purity and Research Grade, are utilized in marking and cutting applications that span a wide range from medical devices to steel fabrication. Those in the agriculture industry also use certain amounts of carbon dioxide to enhance fertilizers in greenhouse operations. Additionally, high purity carbon dioxide is frequently used in the medical industry as an oxygen-free atmosphere for anaerobic incubation, and to prepare special application blends for blood gas monitoring. Where to buy carbon dioxide Because there is such an extensive list of CO2 uses, having local experts on hand to provide or assist you with carbon dioxide needs is extremely convenient and efficient. For more information, use the Find Your Nearest Provider button to contact your local PurityPlus® specialty gas provider or call 877-81P-PLUS (877-817-7587). PurityPlus also provides a Carbon Dioxide SDS available via this link or in the sidebar.