ORP Oxidation ReductionORP Oxidation Reduction Potential Meter Digital Pen Type Product description: This ORP meter has been pre calibrated accurately in advance for your immediate use. It is recommended to calibrate at 265MV buffer solution but can also be calibrated by other buffer solution with different ORP value. NO CALIBRATION SOLUTION IS INCLUDED! This RISEPRO ORP meter can measure the amount of Oxidation Reduction Potential (ORP or REDOX) level in sample quickly and
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