The pathlength ranges from about 1 meter to 200 meters. Materials range from glass, nickel coated aluminum, stainless steel, to nickel depending on the applications. The windows depend on the applications and are typically KBr, KCl, ZnSe, CaF2, BaF2, quartz, or sapphire. The O-rings range from Viton, Cal-Res, Chem-Rez, Teflon, and metal seals made of copper or nickel.  Other materials are available and depend on the application.

The following table highlights just some of the pathlengths and volumes available. There are actually more options than listed. We can pretty much make a fixed pathlength cell for any of the variable pathlength ranges for the corresponding volume listed. 

Gas cell pathlength and corresponding volumes available

Pathlength in meters Volume in liters 3 meter fixed 0.2 4.2 meter fixed 0.375 1 to 5 meters variable 0.5 1.2 meters fixed - conflat 0.5 6.1 meter fixed - conflat 0.5 6.4 meters fixed 0.75 1 to 10 meters variable 2 10 meters fixed 2 2 to 20 meters variable 8 20 meters 8 12 to 48 meters variable 8 8 to 80 meters variable 18 80 meter fixed 18 200 meter variable 50 200 meters fixed 50

10 Meter Stainless Steel Gas Cell Special configurations available for your application and any FTIR spectrometer Typical layout for 200 meter gas cell. The gas cell body can be metal or glass. The pathlength can be doubled for the same base path and diameter using corner cube optics.