Ellen Briggs, PhD Assistant Professor Department of Ocean & Resources Engineering University of Hawai'i at Mānoa We have been developing a ‘micro-rosette’ for collecting water samples on mobile platforms such as profiling floats. Not all sensing technologies can measure at the rate required for mobile platforms so here we use this micro-rosette to collect and store samples to be measured at a later time. For Argo-style profiling floats, there is a ~9-day park cycle between profiles during which the sample analyses can be completed. The original aim was to measure DIC (dissolved inorganic carbon) through a method using a gas