AOAUTO Professional Refractometer Saltwater Aquarium,High Accuracy Salinity Tester for Saltwater Aquarium, Marine Monitoring,Fish Tank 0-100 PPT with Automatic Temperature Compensation (ATC)

【High-quality Materials】The salinity tester for saltwater aquarium adopts high-quality optical elements, with smooth focusing and long service life. Clear scale lines have good readability, and the eyepiece can be rotated to adjust the clarity. More accurate than cheap refractometers! Longer service life!

【Dual Salinity Scale】Saltwater Refractometer measures on specific gravity (D20/20) 1.000-1.070 and parts per thousand 0~100‰, you can get the result in two different units by one test.This refractometer is more accurate, easier to use and more economical than the digital refractometer.

【ATC Function】The refractometer for saltwater aquarium adopts the Automatic Temperature Compensation technology from 10℃ to 30℃ (50 F to 86 F) to reduce the measurement errors caused by different temperatures. Provide accurate, fast and simple readings.

【Advanced Salinity Refractometer】This refractometer is used to measure the salinity of salt water, seawater or low concentrated saltwater and helps you monitor and control the concentration of salt water. It can be used for aquarium, ocean monitoring, saltwater swimming pool, laboratory, agriculture, gardening and education.

【Easy To Use】Our salt water test kits for aquariums contains the required accessories, so there is no need to buy additional accessories and batteries. Just drop 2-3 drops of liquid sample on the prism of refractometer, and then read the reading directly through eyepiece. Simple operation, convenient use and time saving.