Pushing the pH button on the front of the digital pH meter toggles between the readings, and there’s also a button that allows users to measure soil temperature in Celsius or Fahrenheit.

Checking the pH of your pool water, aquarium, or hydroponic garden is essential to maintain optimal conditions, so choosing a reliable, accurate pH meter is important. With a pH meter at your side,… ...

Difficulties aside, [Markus Bindhammer] decided to tackle the topic and came up with this interesting digital pH meter as a result.

Understanding the nature of pH has bedeviled beginning (and not-so-beginning) chemistry students for nearly as long as chemistry has had students. It all seems so arbitrary, being the base-10 log o… ...