The C3™ Submersible Fluorometer can be configured with up to three optical sensors ranging from deep ultraviolet to the infrared spectrum. Internal memory storage capacity combined with an external submersible lithium ion battery allow the C3 to run during extended or short-term deployments. Each unit comes with a factory-installed temperature sensor. Factory-installed depth sensors and copper-armed mechanical wipers are also available. The durable delrin housing is highly resistant to harsh environments. An antifouling copper plate is available as an option for longer deployments. The Integrator Firmware option is recommended when the C3 is used as part of a continuous sampling system that requires 24/7 streaming data collection. C-Soft Windows™ based software allows for intuitive calibration, datalogging set-up and file management capabilities as well as data integration.