A heavy-duty microprocessor-based pH Meter. Measures pH/mV/°C and ORP in the mV range. Allows 1 or 2 point calibration using any of 5 memorized buffers. Features an automatic shut-off to save battery life. Extremely rugged construction. Supplied with double junction pH probe with BNC and temperature probe with 3.3' cables, 4 x 1.5V AA batteries and pH 4 & 7 buffers, all in a rugged case.