Ph Meter Digital Water Tester Buffer Calibration Powder TDS

* with free battery* description with atc function clear and bright lcd backlight display . it can be used in the darkness. automatic compensation, high precision. easy to use with high stability, no need of frequent adjustment. easy to carry. it is a new ph meter,which is easy ,portable and convenience to use! various colors available to choose just need to insert it into the tested solution,it will display the ph level for you!\ it could be used both in lab and home! key features high precision portable accurate easy to read *what’s in the box* ph meter with free batteries and calibration powder