The design of Siemens' LDS 6 analyzer opens new possibilities for the control of processes and emissions. It combines a compact structure and a user-friendly design. It is an analyzer for on-site direct measuring of the process gas. It can measure the following compounds: O2, NH3, HCl, HF, H2O, CO, CO2. It allows the simultaneous measurement of two compounds. It has a QUAL1 certificate for NH3, HCl and H2O.