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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
HI-98128 Hanna Instruments | Hanna Instruments HI 98128 pH Meter, ±0.05pH Accuracy, 0.01pH Resolution, 16pH Max, +60 °C Max | 410-0918 | RS Components
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Hanna Instruments™ Portable pH/mV Meter Portable pH/mV/Temp meter Hanna Instruments™ Portable pH/mV Meter | Fisher Scientific
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