Anything you can do w e can do better Our pollution is better. Because when you're measuring pollutants from stack gases or automobi les, you want better pollution than yours. All our calibration gases come with a guaranteed analysis, accurate to ppm levels. And we have all kinds: carbon monoxide, nitrogen oxides, sulfur dioxide, carbon dioxide, propane, hydro carbons, hydrogen sulfide and others. We'll even mix a new one if you need it. Details? Phone or write Hank Grieco (201.) 464-8100. Airco Industrial Gases, 575 Mountain Avenue, Murray Hill. Ν J . 07974. | R C 0
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