The Tekran Model 2537Xi mercury vapor analyzer is built specifically for stack monitoring of flue gases and other elevated-Hg source gases. The 2537Xi is the cornerstone of the Tekran Series 3300Xi Mercury CEMs which has been installed at over 200 sites in the U.S. The 2537Xi has proven accurate, stable, and reliable under the most remote and rugged conditions. Designed for years of continuous use, Tekran’s patented pure gold cartridge is immune to memory effects and will eliminate the host of interferences that plague direct AA or AF analyzers. Our cartridges do not degrade like other cartridges constructed with gold sand, silica or quartz wool.