CGM US Inc, formerly Photon Technology International Inc, is a fluorescence solutions company. It designs, manufactures and markets electro-optical instruments. Its phosphorescence/fluorescence spectrofluorometers include QuantaMaster 300, QuantaMaster 300 Plus and QuantaMaster 310. Its intensity based spectrofluorometers include QuantaMaster 400. Its near-infrared spectrofluorometers include QuantaMaster 500, QuantaMaster 510, QuantaMaster 520 and QuantaMaster 600. The Company offers high speed spectrofluormeters, such as QuantaMaster 800. Its fluorescence lifetime spectrofluorometers include TimeMaster 3000, TimeMaster 50, TimeMaster 2000 and PicoMaster 1000. Its fluorescence microscopy products include RatioMaster and RatioMaster SL200. Its fluorescence imaging products include EasyRatioPro and EasyRatioPro SL200. Its products are used in laboratories around the world for medical research, healthcare, industrial process, quality control, environmental science and other applications.