"Rapidox 3100-ZA bench mounted dual gas O2 / CO2 analyser incorporating programmable alarm and analogue outputs with datalogging software. Includes an internal sample pump and pressure correction.Oxygen analysis range: 10-20ppm to 30% using zirconia sensor. CO2 gas analysis range: 0-5000ppm, 0-1%, 0-5%, 0-10% 0-30% or 0-100% using IR sensor (range selected at time of order)"