What is Reddit's opinion of Etekcity 2011 Plus Digital pH Meter High Accuracy Water Pen Tester Pocket Size Design with ATC (Automatic Temperature Compensation), 0-14 pH Measurement Range?

From 3.5 billion Reddit comments

I bought this one and some calibration solution.

Whenever I use it I do a triple point calibration first. The most important part of any measuring instrument is the calibration. Cheap meters' calibrations drift with time but it takes days. I calibrate when I heat my strike water.

Be patient, let the meter sit in the solution for at least a minute, stirring a little and make sure to make all your measurements at calibration temperature. Don't trust the automatic temperature correction, just take all measurements at the same temperature.

Cheap meters can normally be stored dry but it will definitely affect the lifetime of the meter. You can use storage solution but you have to be certain about the type of storage solution for your electrode.