Backlight PH Test Pen High Precision Portable PH Detecting Instrument Fish Tank PH Tester

Features:
Pen cover design, easy to carry, not easy to damage, no loss of sensitivity.
Portable water quality analyzer, home use, hospital natatorium, water plant laboratory, aquaculture.
High definition display screen, quick and simple accurate measurement, large digital display more clearly.
Manual one key automatic calibration mode, solve the problem that the long storage time of automatic calibration can not be accurately calibrated.
The top adopts nice sealing process to prevent energy consumption in wet environment.
PH pen is glass electrode probe, heat and cold resistant, high sensitivity.