About This

• COPPER DURABLE: Made of Copper not cheap Aluminum, easy to clean and maintain.
• WIDE APPLICATIONS: Aquariums, Marine Monitoring, Agricultural, Fish Tank Saltwater Measuring, Gardening & Educational Purposes (Biology Projects) etc. Aquarium refractometer is ideal for replacement salinity hydrometers or expensive digital salinity tester.
• DUAL SCALES: 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.
• ATC: Aquarium hydrometer features Automatically Temperature Compensate function and always provide you accurate readings fast.
• EASY TO USE: Only 2-3 drops of sample solution after calibration on prism, towards light, then can read the result fast and accurately.