Review on 🌊 RCYAGO Backlit Salinity Temperature Aquarium Monitor by Sam Lund

Does not include TDS/Salt calibration fluid. If you only need a PH tester you can get a cheaper one or a strip. I bought a 1413 conductivity calibration solution, followed the directions, and paid close attention to the temperature. The tester did not recognize the solution and did not calibrate properly. I tried 5 times to calibrate at different temperatures and the calibrations showed the same ppm. The pH tester works perfectly.