Features: 1.Two different bases, match with quartz coating-tube of 20mm and 22mm inner diameters. 2.The  wavelength are 253.7 nm or 185 nm. 3.The 185 nm hight ozone lamps can produce hydroxyl in the water, dissolve organism, reduce 4.TOC. Disinfect pure water, normal water and medical water, etc water disinfection equipment. ...