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.30M KCl (potassium chloride) solution for refillable pH/ORP electrodes. Fresh electrolyte solution ensures accurate calibration and measurement with your pH meter. For best results, electrolyte should be replenished or completely replaced every 3-6 months.
Wearing Gloves, Drain existing electrolyte solution from the electrode by shaking upside down over the sink. You may need to use the tip of a small pipette or a syringe to break the surface tension of the liquid. Using the same pipette or syringe, replace the solution you just drained with a fresh lot from the bottle.
Store capped and refridgerated and out of the reach of children.