★ The pH tester is small in size and light in weight as a pen, easy to carry and convenient for you to take it in your pocket when you go out. ★ Just take out the protective cap and immerse the electrode of the pH meter in the solution and press the button to measure. ★ The pH meter has an automatic calibration function which can be adjusted according to the temperature and water quality, and pH reading can be obtained by just waiting a few seconds in the test. ★ Suitable for a variety of occasions such as swimming pools, water tap water, home brewing, lab testing, aquarium maintenance, hydroponic nutrition, etc.
