AD1030 Professional Bench Meter accurately measures pH, ORP (Oxidation Reduction Potential), and temperature with advanced calibration up to three points using seven standard buffers (1.68, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45) and two custom buffers. Featuring automatic/manual temperature compensation, large intuitive LCD, calibration alarms, and stable reading HOLD function. Ideal for laboratories and professional testing environments.