Air Products’ Experis® gas mixtures are used across a wide range of industries. The largest area of use for Analytical Mixtures is for calibrating analytical instruments such as gas chromatographs or continuous emissions monitoring systems. Experis® gas mixtures are the answer to all needs for calibration gases and certified reference materials. It is essential to get the most reliable and accurate gas mixtures - if you can’t trust your instruments, you don’t know precisely what you’re buying, making, selling, or discharging.