Product DescriptionDensity Measurement Range: 1.0-1.070, minimum scale is 0.001Concentration measurement range: 0-100C, minimum scale is 1CMeasurement range: 0-10% salinity Graduation: 0.2% Salinity Accuracy: 0.2% ATC: 0 to 10CReference temperature: 20 CBox contents:1 x salinity refractometer1 x plastic pipette1 x mini screwdriver1 x cleaning cloth1. Precision measurement: Sharp dividing line (blue-white), good readability (recognizable daylight), eyepiece for focus adjustment.2. Material: Developed for testing salt water and saline solution concentration, ideal for aquariums, marine monitoring, aquaculture, fish, shrimp, crab, coral, etc. and quality control in research and clinical laboratories.3. Easy to use : Place 2 drop samples on the main prism, close the plate and look through the viewing window to read the salinity value.4. Our chrome-plated brass body is resistant to chemical corrosion and wear, the service life of the refractometer is increased several times compared to other aluminum housings.5. Measurement range:: 0-100% salinity (0-10% salinity), specific gravity 1000-1070 SG, accuracy: salinity +/- 1%, specific gravity +/- 0.001 SG, accuracy: 0.2%.