Backlit Ph Pen Tester High-precision Portable Ph Meter Testing Instrument For Aquarium Fish Tanks

--Easy to use: Just immerse the pH meter electrode in the solution to be measured

--Large LCD screen: easy to read

--Wide range of applications: suitable for a variety of scenes

--Automatic calibration-with built-in calibration function, with 2 kinds of buffer powder (included). Just press a button to complete the calibration.

--Compact portable design: light weight and compact. Fully fit hidden in your bag or pocket for easy carrying