The SPM Flex provides critical analytical level monitoring of a large range of gases.
THe unit is able to monitor to the ppb level on certain gases and to the low ppm level on others
Ammonia NH3, HF, HCL, HBr, HF,
Chlorine(CL2) Fluorine F2,
Phosege, HCN, Ozone,Hydrogen Peroxide
It uses a lead-acetate ppaer tape monitoring system which detect the gases. The tapes have a specific shelf life and useable time