Extech RE300 ExStik ORP Meter with Flat ElectrodeThe Extech RE300 ExStik ORP Meter with Flat Surface ORP Electrode provides accurate and high resolution ORP Redox measurements from 999 to 999mV, with a resolution of 1mV and 4mV accuracy. Designed for professionals in water quality and environmental testing, the RE300 features a flat surface electrode for optimal contact and performance. Convenient features include automatic electronic self calibration, data validation indicators, Data Hold, and Auto
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