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Re: !!News Flash!!O2 Kills Trooper NOX!!
Posted to Emissions Forum on 3/16/2001 1 Reply

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Yep, air is 20.9% O2 and 79% N2 and a little other stuff. The NOx detector, by the way, does not respond to NO2 (which makes up roughly 5-10% of the NOx emissions), and only detects NO.

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