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EZ9908 4 in 1 Digital Water Quality Tester Pen Type PH Meter Acidimeter pH / TDS / EC TEMP Water Quality Monitor

$24.00
Do you want to know if the quality of the water you drink depends on the standard? If so, this pen
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High Accuracy Pocket-sized 3 in 1 Digital LCD TDS / EC / PH / TEMP Water Quality Meter Tester

$23.00
Features: Use to measure the PH & TDS & TEMP of solution. Electrode probe can be replaced, ATC function. Easy
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TDS EC Meter Temperature Tester pen 3 in 1 Function Conductivity Water Quality Measurement Tool TDS

$4.30
Lock function, easy to read and save, the instrument locks playback. Five minutes automatic shutdown function, battery will not run
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TDS-1396 TDS Water Quality Test Pen Digital Temperature Meter

$14.95
Features: Used to measure the solution pH and TDS and temperature. Electrode probe can be replaced, ATC function. Easy to
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