AD131 is a heavy-duty portable waterproof meters for pH and temperature measurements, designed to provide laboratory results and accuracy even under harsh industrial conditions.

Main features include:

• • 7 memorized buffers for pH calibration (pH 1.68, 4.01, 6.86, 7.01, 9.18, 10.01 and 12.45)

• • Messages on the LCD to make the calibration easy and accurate

• • pH readings with manual or automatic temperature compensation

• • Calibration time-out alarm

• • Log-on-demand

• • HOLD feature to freeze stable reading on the LCD

• • GLP feature to view last calibration data for pH and relative mV