> The company I work for sells the equipement for doing the emission tests
> here in Ontario, Canada. The gas analysis is done by passing a sample thru
a
> tube with an infra red light source at one end and a detector at the other
> end. The critical part is the filter windows in between. CO2 absorbes a
> particular wave length of light, as does HC and CO. Nox and O2 are
measured
> with a chemical reaction sensors separate from the other gases.


Do you sell the filters separately?



TIA

                Russell McMahon

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