1name:high quality Pentype PH meter 2code:SX-650 3high quality ,easy to operate ,ATC,waterproof 4TDS ,T ,salt, available Technical ... Temp: 0 ~ 50.0°C2.Accuracy: Conductivity: ±1.0% FS; Temperature: ±0.5°C3.Temp. compensation range: 0 ~ 50°C (auto ... ×2,can keep using more than 100 hours.6. Size and weight: 148×29×14mm / 38g7.Waterproof grade: IP57Update Date:2011 ...