109
people found this helpful, as of 2023
ranked #244,244 most helpful
out of 571,544,897 reviews
★☆☆☆☆
One Star
I bought two and they arrived together in the same box. Calibration is obviously off...
the product in question
HM Digital TDS-EZ Water Quality TDS Tester, 0-9990 ppm Measurement Range, 1 ppm Resolution, 3% Readout Accuracy,Purple
4.4★ · 7,232 ratings, as of 2023