Laramie, Wyo.-based In-Situ Inc. announced the release of its new and integrated RuggedDO (RDO) sensor for the multi-parameter, TROLL 9000 water quality probe. The new sensor utilizes recent advances in lifetime-based optical fluorescence sensor technology to provide an extremely stable, precise and low maintenance dissolved oxygen sensor. The technical improvements afforded by this proven technology stand to revolutionize the current methods of water quality monitoring.