Envira offers a range of trace level multi-gas calibrators (SO2, H2S, NO, NO2, CO, O3 and others), both integrated and portable.
It incorporates high precision thermal mass flow controllers and up to four independent gas inlets.
As options, it allows the internal incorporation of a UV ozone generator, UV photometer and GPT (NO2) chamber. Possibility of programming multiple calibration sequences. It incorporates a colour touch screen.
They also provide calibration standards for multi-point span and zero calibrations.