Salinity Refractometer 0-10% 1000-1070SG Optical Salometer For Seawater Marine Aquaculture Food Salt Tester Please note that the black box is an old version The new box is blue Salinity Refractometer 0-10% 1.000-1.070SG Optical Salometer For Seawater Marine Aquaculture Food Salt Tester This optical Brix & Salinity Refractometer is designed to measure seawater (marine aquaria) or very low concentrated salt solutions & low concentrated of sugar solutions as well as reading salt solution density. Measuring Range: 0-10%1.000-1.070SG Division: 1 Accuracy: 1 ATC: 10~30C Reference Temperature: 20C Auto Temperature Compensation (ATC) 10~30C,increase accuracy and eliminates concerns on temperature Easy to use & calibrate Cushioned with soft & comfortable non-slip rubberized grip, insulate test solution from body heat Adjustable focus & clearly defined scale, w/ large easy-to-read measurements Approved by strict quality and safety standards * Measure concentration of salt water & brine or salinity in water * Used for quality control in research, clinical laboratories, food & beverage industry * Have better management marine saltwater tank * Ensure pets are safe in your aquarium & water has exact level of salinity they need to survive & thrive in their typical marine environment * Maintain proper concentration of your cutting and grinding fluids & save your money! * Works w/ low sugar related food like tomato juice,tea,etc. Just few drops on testing prism, cover, look and read the result! 1)1 x Refractometer 2) 1 x pipette 3)1x instruction manual 4)1x mini screw driver 5)1x cleaning cloth _x000D_ _x000D_