For highly precise and accurate measuring of salinity and specific gravity. Measuring only requires a couple drops of test solution. Ideal for use in aquiculture research, public aquariums and for aquarists who wish to obtain...
Digital Refractometer with built in LED light source. Displays three different measurement units: Salinity in parts per thousand, Specific Gravity, and Practical Salinity Units (PSU). Temperature is also displayed. Includes ATC Automatic Temperature Compensation. 9V Battery Op...