This is a true seawater or a salt (brine) refractometer preferred by the aquarist. Designed to measure seawater (marine aquaria) or very low concentrated salt solutions It can be generally calibrated by fresh water but to ensure accurate salinity measurement of a reef aquarium, calibrate at least once by a solution matching the refractive index of 35ppt seawater or similar solution near measurement range. With this refractometer you can: Measure concentration of salt water and brine or salinity in water Used for quality control in research, clinical laboratories, and marine industry Have better management of marine saltwater tank Ensure pets are safe in your aquarium Ensure water has the exact level of salinity they need to survive and thrive in their typical marine environment With few drops on the testing prism, cover, look and read the result! COMMON FEATURES ON OUR REFRACTOMETERS: Auto Temperature Compensation (ATC), increase accuracy and eliminates concerns on temperature Easy to calibrate and use Soft rubber eyepiece for comfortable viewing Cushioned with soft and comfortable non-slip rubberized grip, insulate test solution from body heat Adjustable focus, clearly defined scale, w/ large easy-to-read measurements Durable, built to last long Approved by strict quality and safety standards Accurate results guaranteed Specifications: Range: 0-10% Salinity; 1.000-1.070g/cm3 Density Resolution: 1ppt Salinity; 0.001 g/cm3 Density Reference temperature: 20°C ATC: 10-30°C Item Length: 20.5cm Item Weight :109 g Set Includes : 1 x Traditional Salinity Refractometer 1 x English Instruction manual 1 x Mini screwdriver 2 x Pipettes 1 x Cleaning Cloth 1 x Portable USB LED Light (Power Bank is not included in the set) 1 x Protective Carrying Case
