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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 | Medidor de pH Hanna Instruments HI 98128, -2pH → 16pH, Resolución 0.01pH, Precisión ±0.05pH | RS
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