Product name: 5 in1 TDS EC meter PH meterColor: BlueTDS measurement range: 0 to 1000ppmEC measurement range: 0 to 10000µS / cmPH measurement range: 0.01-14.00pHSalinometer measurement range: 0.00-25.00%Seawater salinity meter measuring range: 10.1-200.0pptUsable temperature: 0-80 ° C (cannot be used for boiling water)Fahrenheit: 32-176 ?Battery used: CR2032 button battery x 1Size: 152mm (H) × 29mm (W) × 14mm (D)Weight: about 55g[Water quality measurement / PH measurement / TDS measurement / sugar content measurement]? Remove protective cover and switch on? If you want to use EC / PH / TDS / sugar meter mode, press “Switch and MODE / CAL” button to switch modes? Soak the titanium probe in water? Gently stir the water quality meter to eliminate bubbles attached to the probe? Press the “HOLD” button in about 10 seconds to lock the stable value, lift the measuring instrument, and read the measured value?Press the switch-off button and wipe the probe.[3-point automatic calibration]"3-point automatic calibration" with automatic temperature compensation. Immerse the electrode in PH (9.18, 6.86, 4.00) standard solution and press the CAL button to calibrate automatically. It is more convenient and saves time than conventional manual PH meters.