ADWA AD131 Professional pH-ORP-Temperature Portable Meter with GLP


7 memorized calibration buffers; Display messages for easy and accurate calibration and readings; Built in memory and GLP (Good Laboratory Practice)

  • Parameters: pH, ORP, Temperature


AD132 is a heavy-duty portable pH meter designed to provide laboratory results and accuracy even under harsh industrial conditions.

pH Specifications

pH range

-2.00 to 16.00 pH

pH Resolution

0.01 pH

pH Accuracy (@25ºC/77ºF)

±0.01 pH

pH Calibration

Up to 5-point calibration, with 7 standard buffers (pH 1.68, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45)

Temperature Compensation

ATC/MTC, -20 to 120°C / -4.0 to 248.0 °F

ORP Specifications

ORP range

±2000 mV

ORP Resolution

0.1 mV (±999.9 mV) / 1 mV (outside)

ORP Accuracy (@25ºC/77ºF)

±0.2 mV up to ±699.9 mV / ±0.5 mV up to 999.9 mV / ± 2 mV (outside)

ORP Calibration

Factory calibrated

Temperature Specifications

Temperature Range

-20.0 to 120.0°C / -4.0 to 248.0°F

Temperature Resolution

0.1°C / 0.1°F

Temperature Accuracy

±0.4°C / ±0.7°F (excluding probe error)

Temperature Unit

°C and °F

Additional Specifications

pH Electrode/Probe

AD1230B - epoxy body pH electrode with double junction, BNC connector and 1 m cable (Included)

Temperature Electrode/Probe

AD7662 - Stainless steel temperature probe with 1 m cable (Included)


Yes (With time stamp)


Log-on-demand 500 samples

Hold function

Yes (Auto End Point)

Stability indicator


Low battery indication


Auto shutt-off

20 min. (can be disabled)

Battery Type / Life

4 x 1.5V AA batteries / Approx. 300 hours of continuous use


188 x 96 x 70 mm


460 g

Ordering Information

Adwa AD131 is supplied with AD1230B - pH electrode with epoxy body, double junction, BNC connector and 1 m cable; AD7662 - Stainless steel temperature probe with 1 m cable; AD70004 - pH4 calibration solution in sachet (20 ml); AD70007 - pH7 calibration solution in sachet (20 ml); Wrist strap; Batteries (4 x 1.5V, AA alkaline); Instruction manual


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