CR CleanAir patented NOx scrubbing technology provides extremely high removal efficiencies (99%+) for total NOx (NO2 and NO) without the need for exotic or expensive chemicals. This technology is not applicable to combustion generated NOx. Our Surface Active packing media makes these high efficiencies possible by retaining intermediate aqueous reaction products on its surface long enough to permit their absorption. Thus preventing these reaction products from breaking down to form NO which would otherwise be released back into the gas stream. It is this re-release of NO into the gas stream that limits the efficiency of conventional water or caustic scrubbing to less than 70%.