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Amazon.com: Apera Instruments PH700 – Medidor de PH, de mesa, precisión de 0.01 pH, calibración automática de 1-3 puntos, 3 en 1 PH/Temp. Electrodo. : Industrial y Científico
PH Meter, Digital PH Tester 0.01 High Accuracy PH Meter for Water, 0-14 PH Measurement Range for Drinking Water, Pool and Aquarium: Amazon.com: Industrial & Scientific
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Amazon.com: RCYAGO Medidor de pH con electrodo de pH y baterías, probador de pH para agua, leche, queso, tierra, alimentos : Industrial y Científico
