Crystal IS, an Asahi Kasei company, is an innovative U.S.-based manufacturer of proprietary, high-performance ultraviolet (UVC) LEDs. Our products are well-suited for purification and disinfection in a variety of applications, including industrial and point-of-use (POU) water purification. Our UVC LEDs are also used in scientific and industrial instruments to measure the purity of water, air, surfaces and biological samples.