Specifications: 3~25mm Infrared Wavelength scope:3u-15u(micron) Far infrared emissivity:0.87~0.91 Infrared Wavelength scope:3um-15um. Used for various types of water purification, drinking water and water treatment. Specifications: 3~25mm*Function: antibacterial,remove bad smell, water mineralization, activation, be easy to be absorbed by body. *Application: for various types of water purifier, ...