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HI991404 | Combo Grochek Monitor pH EC TDS Temp Hydroponics | Hanna Instruments.:
$144.95

HI991404 | Combo Grochek Monitor pH EC TDS Temp Hydroponics | Hanna Instruments. The Combo HI-991404 and HI-991405 series meters from Hanna are designed for continuous, high accuracy pH, EC/TDS and temperature measurements.

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