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Dr. Meter® Pocket Size pH Meter with ATC PH100 0.01 High Accuracy
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SX620 pH Pen Tester Kit with 0.01 pH accuracy, 3-point Auto. Calibration ATC 0-60˚C
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Milwaukee MW806 MAX 4-in-1 pH/EC/TDS/Temp. Combo Meter with ATC
3 in 1 pH / EC / Temperature Meter ATC Waterproof Pen Type Tester – Gain Express
