Salinity Refractometer with ATC for Seawater Pool Aquarium, 0~100‰ Scale Range with 1‰ Division, Calibration Fluid Hydrometer Salt Water Tester Portable for Fish Tank, Marine Industry

⭐【Dual Scales】0-100 ppt ( 0 ~ 100 ‰) of Salinity & 1.000 to 1.070 Specific Gravity (D 20/20). The reading resolution is 0.001 & 1‰. ⭐【Easy to Use】Just need 2-3 drops of solution, you can get accurate readings. And no battery needed. You can use distilled water to calibrate. ⭐【ATC】Automatic Temperature Compensation, 0-10°C. ⭐【Ideals】Measure salt water or very low concentrated salt solutions, ideal for testing and monitoring aquariums, fish tank, saltwater pool, seawater. ⭐【High Quality】It features high-quality optics with smooth focusing. Its main body is made of aluminum alloy. Acheter sur Amazon