Labtron Portable pH/ORP Meter measures pH (0.00–14.00, 0.01 resolution), ORP (±1999 mV), millivolts, and temperature for water quality analysis, environmental monitoring, and laboratory testing. Automatic temperature compensation (ATC), multi-point calibration with pH 4/7/10 buffer recognition, and manual temperature calibration support measurement consistency across variable sample conditions. Calibration interval alerts assist scheduled maintenance. Suitable for water treatment, environmental laboratories, field sampling, and bench-top analytical workflows.