I recently ordered a digital pH meter to go with some of the Chemistry resources at the STEM event and at home.

• Solomi PH Tester

This is a nice little unit, using 2x LR44 (AG13) cell batteries, I did a quick test on some tap water and some vinegar and got expected results. Seems tap water is slightly on the acidic side, so i may have to do proper experimentation with this.

Easy to set, just add batteries, take off protective cover and place in the liquid that you want to test.

One comment that the instructions are in Chinese, which isn't really helpful, but the unit is easy to use, with some common sense and problem-solving skills.

Measurements are from pH 0 to pH 14, with increments of 0.01 so it should be possible to measure very small changes or gradual changes that may take place during reactions for example.

I will be using this at a future STEM group meeting in the meantime, there is an experiment I want to undertake anyway and this will be ideal.

Tags

#Science,#Chemistry,#pH,#Tester.