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Combined pH, EC and temperature meter for water hydroponic system
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COM-300: Waterproof Professional Series pH/EC/TDS/Temp Meter – Fresh Water Systems
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Portable pH/EC/TDS/Temperature Meter with CAL Check™ - HI9813-6
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Portable pH/EC/TDS/Temperature Meter with CAL Check™ - HI9813-61
Milwaukee MW802 PRO 3-in-1 pH, EC, TDS Combo Meter with ATC
Milwaukee BEM802 Digital pH EC TDS Meter | Avogadro's Lab Supply
