1.Waterproof pocket pH tester easy to operate.
2.Circular pH-sensitive membrane fully senses the pH of liquids.
3.2 points push-button calibration with auto-buffer recognition.
4.Hold function momentarily freezes reading for easy viewing and recording.
5.Auto-Power Off effectively conserves battery life.
6.Replaceable electrode module reduces maintenance and replacement cost.
7.Waterproof feature to ensure complete protection in harsh environment.
Swimming pool and spa