In January 1991, HORIBA's atmospheric pollution monitoring device accurately recorded the outbreak of the Gulf War, an event which shook the entire world. HORIBA had delivered many atmospheric pollution monitors and water quality monitors to Kuwait (which was being invaded by Iraq at the time), aiding the country's industrial development. Almost all those monitoring stations were destroyed in the war. However, one station remained intact and kept recording the state of the atmosphere in wartime Kuwait. The recorder of this unmanned atmospheric monitor noted a drastic increase of air pollution, indicating the commencement of the war.

CO (carbon monoxide) is a toxic gas, and NOx (nitrogen oxide) a cause of acid rain. On top of these, SO₂ (sulfur oxide), Ox (oxidant), HC (hydrocarbon), and dust are strictly regulated as air pollutants through Japan's environmental quality standards. HORIBA's unmanned atmospheric pollution monitoring and measuring device detects these air pollutants automatically. It is used around the world and it keeps an eye on the global environment.

You may have seen an electric signboard saying, "the current CO concentration is xx ppm." An atmospheric pollution measuring device is installed inside the sign, checking the state of the air in the area around the clock.

			Ambient NOx Monitor APNA-370
	The APNA-370 uses a combination of the dual cross flow modulation type chemiluminescence principle and the referential calculation method. This gives it the advantages of the single-detector method plus the ability to do continuous measurements of NOx, NO, and NO2. The design gives great stability and extremely high sensitivity (0.1 ppm F.S.) << MORE INFOMATION >>