The OHAUS AQUASEARCHER™ AB41PH bench meter is designed with reliable measurement and precise performance in mind. The i-Steward ensures repeatable and consistent measurement accuracy for optimal peace of mind. The large LCD display and touch keypad makes changing the parameters, executing setup, and performing calibration as simple as using a smartphone.
Applications
pH, oxidation-reduction potential (ORP) with Temperature Measurements
Display
6.5" Segment & Dot matrix LCD with backlight
Operation
AC adapter (included)
Communication
RS232, USB Device (included), GLP/GMP data output with real-time clock
Construction
Capacitive touch, ABS top housing, standalone electrode holder
Design Features
i-Steward, 3 endpoint modes, calibration due alarm, 1,000 measurement memory, ten most recent calibrations, password management
With selectable resolution from 0.1 to 0.001 and an intelligent i-Steward system, AB41PH is an excellent pH bench meter with high resolution and consistent accuracy.


Equipped with a 6.5-inch large LCD display and a touch keypad, AB41PH offers a simple and precise control experience.
The AB41PH features a 1000-item memory and password management for GLP documentation. Provides connectivity and data output capabilities with RS232 and USB interface.

Measurement Range |
-2.000 – 20.000 pH; -10.0 °C – 125.0 °C; -2000.00 – +2000.00 mV |
Measurement Resolution |
0.1 mV; 0.1 °C; 0.001 pH |
Accuracy |
±0.3 mV; ± 0.002 pH; ±0.3 °C |
Display |
LCD with backlight & one-line dot matrix |
Accuracy ± (mV) |
0.3 mV |
Accuracy ± (Temperature) |
0.3 °C |
Electrode |
AB41PH-B: Not Included AB41PH-F: ST410 (Included), STTEMP (Included) |
Dimensions |
8.3 in x 2 in x 5.6 in (210 mm x 51 mm x 142 mm) (LxHxW) |
Net Weight |
1.1 lb (0.5 kg) |
Parameter |
pH/mV/ORP |
pH accuracy (±) |
0.002 |
Power |
AC Adapter (Included) |
Working Environment |
5°C – 40°C, 80% RH, Non-condensing |
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