Equipment

This one works with your smart phone using a free or paid app, and it has no screen! This one has a gel filled, single junction glass electrode, like most others. It can measure a pH range of 0 to 14, It measures temperature from 0˚C to 50˚C, +/- 0.5˚C, but it doesn’t note that it has...

I bought this pH meter the summer of 2017 from Amazon.ca when my Jenco pH630 needed a new electrode and I needed a meter fast! The first one didn’t work, so the company replaced it with a new one very quickly, which was impressive. The HM Digital pH 200 is a pen type pH meter...

This one has a cute feature: When you reach the pH measurement you want or when it’s done measuring, it gives you a little smiley face.  This pH meter has a glass electrode. It measures temperature – 0˚C to 50˚C, +/- 0.5˚C – and has automatic temperature compensation (ATC). It measures pH 0 to 14, but...

In part one of this series, we took a look at the chemistry of acids and bases. In part two, we took a look at how pH strips work. In part three, we reviewed some of the pH strips I’ve played with in my workshop. In part four, we looked at how to use a...