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HI98127 | Hanna pH Meter, -2 ... 16 pH, -5 ... 60°C | Distrelec International
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Hanna Instruments HI98103 Checker pH Tester with Ph Electrode and Batteries, 0.00 to 14.00 pH, +/-0.2 pH Accuracy, 0.1 pH Resolution: Lab Electrodes: Amazon.com: Industrial & Scientific
