AD1000 is a professional bench meter for pH, ORP (Oxidation Reduction Potential) and temperature measurements. Relative mV readings are also provided. Main features include: Up to 5-point calibration with 7 memorized buffers (pH 1.68, 4.01, 6.86, 7.01, 9.18, 10.01 & 12.45) and two custom buffers Calibration time-out alarm pH calibration using buffers with 0.001 resolution pH reading with manual or automatic temperature compensation Log-on-demand (up to 50 samples) and automatic logging (up to 1000 samples) Two selectable alarm limits User selectable logging interval mode Connection to an external serial printer with the following specifications: at least 16 characters / line baud rate 9600 9-pin RS232 input Large easy-to-read LCD showing pH or mV and temperature readings simultaneously, together with graphic symbols HOLD feature to freeze the stable reading on the LCD GLP feature to view last calibration data for pH and relative mV PC interface