Salt20 Value Salinity Meter, Pocket Tester, Waterproof, ±1% Accuracy, ±0.5˚C Temperature Sensor, Complete Kit

I found the device easy to calibrate as per the instructions. You need to be careful as they are generic instructions, so some steps are only relevant to other devices. I found temperature reading to be inaccurate. I have a validated infra-red thermometer and the salinity meter initially reads 4.5c above the actual temperature. If I keep it in the liquid I'm measuring for a few minutes, it eventually comes down close to the actual temperature, but I would expect it to give an instant accurate reading. It's well-built overall, but the lack of accuracy in temperature would lead me to question the accuracy of the salinity reading.