2-in-1 Auto Refractometer For Coffee Hydrometer TDS Concentration Meter Tester Detector Digital Measure Sugar

- Function: Coffee concentration with range of 0-25%; measurement with range of 0-30%; temperature displayed; calibration function
- Provide with suction tube and spare protective cover. The function keys are clear and easy to operate. Digital screen with large number, battery power can be displayed.
- Temperature unit converting: Press key “SCALE” more than 2 seconds, meter will display ℃ or Fahrenheit.
- Calibration: No need calibration every time. Drip 3~5 drops distilled water in sample plate, make sure the water and meter temperature is same and standard temperature is 20ºC, then cover it. Press key “CAL” more than 2 seconds until “CAL” flashing, press “CAL” key again, meter will display “END” and show 0.0%.
- Power off: Meter will power off within one minute if no any operation