![What Exactly Is pH?](https://cole-tpomag.imgix.net/https%3A%2F%2Fwww.tpomag.com%2Fuploads%2Fimages%2Fh.jpg?crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=620&ixlib=php-1.1.0&q=75&w=1024&s=4642cfaae5cfae2f9f3c7aededae57c6)
When operators are asked to define pH, many struggle to describe what it is and how it is measured. Let’s look at those matters — and explore how questions about pH might be worded on a wastewater licensing exam.
The technical definition of pH is: the logarithm of the...