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This web site vandf.com has the following on the web page, "Hydrogen Measurements on Combustion Engines." We noticed that the website also said " Gas Analysis in Fuel Cell Technology." It also said " Ammonia and NOx Measurements in Engine Exhaust Gas. Desulfation Strategies for Catalytic Devices. Immission Monitoring by IMR-MS in Accordance with EPA Methods. Monitoring Immission of Gases Near Waste Processing Plants. Mobile Pollution Measurements in Traffic. Monitoring Air Quality Near Petrochemical Plants. Dioxin Formation in Waste Incinerators." The header had imr-ms as the highest ranking optimized keyword. It is followed by imrms, ms, and ion molecule reaction mass spectrometry which isn't as ranked as highly as imr-ms. The next words vandf.com used was airsense. co2sense was included but will not be viewed by search engines.