Obtaining both phycocyanin (PC) and chlorophyll estimates helps in determining whether additional testing is required to check toxicity levels in a body of water. Turner Designs now offers PC as an optical configuration of their FluoroSense handheld fluorometer to assist with identification of PC containing algae typically associated with Harmful Algal Blooms (HABs). A simple two-button keypad enables users to quickly power on the instrument and take a reading to estimate chlorophyll or PC in almost any aquatic habitat. FluoroSense can take over 10,000 measurements on a single pair of AA batteries. Because the instrument is factory calibrated, the only maintenance required is simply rinsing after use. The PC FluoroSense can estimate PC concentrations spanning the linear range from 0 to 199 μg/L and resolve down to 1 μg/L.