Mixed gases: " At Global Calibration Gases we offer a complete line of custom gas mixtures in a wide variety of cylinder packages. We have the ability to supply any gas mixture as long as the components are compatible with each other and the cylinder package used to contain the gas mix. The mixed gases section serves to list the most common combinations and concentration levels for binary gas mixtures. Additional components can be added as requested and are subject to the approval as related to safety and stability. Please contact us with any special requests and we can advise on a mix to best suit your application."