Salinity Refractometer 0-28% Concentration Detection Water Food Salinity Meter Broth Salinometer Salt concentration: 0-28% Measurement range: 0-28% Smallest scale : Salt 0.20% Dimensions (mm): 30*40*205 Features automatic temperature compensation (ATC)0-30 Measure salt water or salinity of water, ideal for aquariums and marine monitoring This is an awesome, easy to use and read, excellent quality. Comes with hard case, dropper, screwdriver and cleaning cloth