ABB is exhibiting its latest range of air and gas analysers at the Air Quality and Emissions Show at the Telford International Centre. It is featuring a selection of ABB equipment utilising a variety of measurement techniques, including laser, zirconia and FT-IR spectrometry. Products include the LS25 laser gas analyser which enables in-situ monitoring in stacks, pipes, process chambers and other similar applications and uses tuneable diode laser absorption spectroscopy (TDLAS) to measure concentrations of various gases including oxygen and ammonia in gas streams.