Portable Salinity Meter Salinometer Water Quality Refractometer Gauge ATC Digital Water Salinity Tester for Pools Aquarium Sea Salinity refractometer, used in aquariums, sea water, sea fish breeding, testing, salt water tester with ATC, specific gravity salinity meter (dual scale 0-100ppt and 1.000-1.070) product description: 1. Easy to use: The salinity refractometer is easy to operate. After calibration, you only need to add 2 to 3 drops of water to get accurate readings, instead of poor quality refractometers and difficult-to-read hydrometers 2. Double scale: Salinity refractometer density specific gravity (D 20/20) a few thousandths of 1.000-1.070SG, the smallest scale is 0.001, concentration measurement range w / w 0-100, resolution 1 3. Salinity tester: measure the salinity of salt water or water, very suitable for aquariums, sea water, marine fish breeding, marine fish tanks, salt water pools and spas, etc. 4. Automatic temperature compensation: The salt water tester can automatically compensate the temperature when the ambient temperature changes, so you can get accurate readings easier and faster. 5. Durable and portable: The salinity meter is made of aluminum body and external ABS rubber, resistant to wear and corrosion. The plastic box and sponge cover make the refractometer safe. product description The refractometer is designed according to the principle that liquids of different concentrations have different refractive indexes, and has the characteristics of fast and accurate. Salinity refractometers are widely used in aquariums, ocean monitoring, fish tanks, seafood tanks, salt water pools and spas, and are used as salt solution testers for educational or agricultural purposes. feature: The salinity tester requires le test samples than traditional hydrometers, only 2 to 3 drops, and then wait a few seconds, you will get an accurate reading. The specific gravity (D 20/20) and parts per thousand of the salt water refractometer replace the poor quality and difficult to read hydrometer. Dual scale salinity meter: 0~100 (1 = 1PPT, PPT means "one thousandth", the specific gravity range is 1.000 to 1.070 The automatic temperature compensation (ATC) function makes the refractometer more accurate, and changes in the ambient temperature between 50F and 86F will not affect the readings. The optical salt refractometer is easy to calibrate and easy to operate, does not require batteries, and is cheaper than a digital refractometer. The hand-held salt water tester is made of non-staining, non-corrosive aluminum and ABS plastic, lightweight, easy to carry, and durable. Instructions: 1. Calibration: Only 2-3 drops of distilled water or fresh water are needed to calibrate using a miniature screwdriver. Check whether the blue line is zero through the eyepiece. 2. After calibration, put 2-3 drops of test sample on the clean main prism 3. Turn off the solar panel and place it under the light source, then check the reading. 4. After use, wipe the prism with a cleaning cloth and store it. Package Included: 1 x refractometer 1 x plastic pipette 1 mini screwdriver 1 x cleaning cloth (random color) 1 x plastic box note: Accurate measurement depends on careful calibration Product weight: 0.25kg