User-Friendly Design: Large, clear display for easy reading, 1-point calibration with included screwdriver, and automatic temperature compensation (050°C).;
How to calibration: Clean the electrode and gently dry with paper towel. Dip the electrode into the distilled water for about 5 minutes. Turn on the unit by the ON/OFF switch, it is located on top of the unit.;
Wide Measurement Range: Accurately measures ORP (Oxidation-Reduction Potential) from -1999 to +1999 mV in 1 mV steps, suitable for testing drinking water, pools, aquariums, wastewater, and industrial applications.; High-quality ORP calibration solution with a precise 256mV reading; Easy to use with a 30ml bottle and clear instructions