HF scientific expanded its product offering with the addition of the new AdvantEDGE Series Optical Dissolved Oxygen RDO measurement electrode. Using the principle of “dynamic luminescence quenching,” HF scientific is able to offer a sensor with notable accuracy, faster response time and a low cost of ownership. Pre-loaded calibration coefficients in the sensor cap simplifies setup and eliminates programming errors. Using a design that does not include membranes, the Optical DO electrode reduces time-consuming maintenance and allows long deployments without recalibration in demanding environments.