The Extech PH300 waterproof pH/mV/temperature meter features a waterproof housing meeting IP57 rating and automatic calibration at pH 4, 7, and 10. Choice of 3‑point calibration for better accuracy. Automatic temperature compensation and memory stores up to 200 readings with series number, measured value, and temperature.

Large, blue, backlit dual LCD display. Auto power off function saves battery life with disable option. Includes (2) AA batteries, pH buffer solutions, and carrying case. Ideal for laboratory and field applications requiring high accuracy.