Untitled Document\n\nMore than 200.000 satisfied customers - Quick delivery from our warehouse - More than 7.000 references in stock - Satisfied or Refunded\n\nEC / TDS Probe / Electrode Replacement for HM Digital COM-100 (SP-C1)\n\nEC/TDS replacement electrode for HM Digital COM-100 Meter (SP-C1)\n\nThe EC/TDS electrode is a sensor based on an electrochemical cell. This cell begins to suffer wear from the moment of its manufacture until the end of its useful life. The life of an electrode is limited, being typical from 1 year to 2 years. Careful handling and good cleaning are essential for a good measurement result.\n\nBefore measuring or calibrating, the electrode must be rinsed with distilled water. The electrode should never be touched with fingers, paper, or anything other than water.\n\nWe advise you to regularly recalibrate the EC/TDS probe with a suitable calibration solution for optimum accuracy. You can combine the purchase of a probe with a calibration solution available i.