Review on WEKSUN pH and TDS Meter Kit - Digital Water Quality Tester for High Accuracy Testing of pH and TDS Levels - Backlit Screen - Ideal for Drinking Water, Aquariums, and Swimming Pools by Denese Fothergill
Works best in a chemical analyzer
I have to calibrate every few applications by running a floor drain test and this makes for quick and easy calibration and general use. solutions save and use before using the pen or after every few uses. For me floor drain test, 5 uses max, then calibration. It's the same with all the pens I've used. Heat the water to make the powder dissolve in less than a year. I taped up the huge holes on the back. Great pen, better than my blue lab.
- Easy to read control panel
- There are cons
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