The CoralVue 28ppt Salinity Calibration Fluid (250mL) (CV-SCS28) is for precise calibration of refractometers, hydrometers, and salinity/conductivity equipment, CoralVue Salinity Reference Solution is highly recommended. This solution, denoted as 28PPT, is one of the two necessary components for calibrating HYDROS Salinity Probes. Comes in a 250mL bottle.
