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