At Instrument Choice, we proudly stock over 150 brands of scientific instruments and laboratory equipment. Our mission is to provide our customers with the broadest selection of scientific instruments, all in one place, so you can measure anything and measure everything.
To help you find the best products to suit your application, Instrument Choice Scientists regularly spotlight new products we’ve added to our store so you have a better idea of what’s on offer.
This edition features the brand new range of AquaSearcher Benchtop Meters by OHaus, a series of modern laboratory benchtop meters that excel at putting the users’ experience first.
About OHaus
OHaus started as a scale repair business in 1907. They are now a world leader in the manufacture of a vast selection of scales and balances. In 2015, OHaus launched a new line of laboratory products that included water quality meters, electrodes, pH meters, centrifuges, shakers, incubators, mixers, block heaters, hot plate stirrers, and more.
About the Aquasearcher Benchtop Meters
AquaSearcher benchtop meters are unquestionably one of OHaus’ most efficient and intuitive to operate instruments for laboratory sample analysis. Our team of scientists tested the latest models, and they particularly liked the following NEW features:
• I-Steward system: The quick, intuitive and reliable i-Steward software drives the powerful Aquasearcher series. Across select models, the i-Steward system comprises calibration due alarms, an electrode condition check system and an internal calibration log list.
• Large and user-friendly touch screen
• Enhanced, practical and ergonomic electrode holders
• Instructional menu buttons that facilitate quick, smooth data access
• Ability to connect to our magnetic stirrer (AS20); and
• How simple it was to perform complex calibrations.
The AquaSearcher series comprises three groups:
1. Aquasearcher AB41PH Benchtop Meters
2. Aquasearcher AB33 Benchtop Meters (AB33PH, AB33EC, and AB33M1)
3. Aquasearcher AB23 Benchtop Meters (AB23PH and AB23EC)
Each group offers varying measurement parameters, design features, operation and communication options. So to help you find the best AquaSearcher for your application, our scientists have summarised (below) key information about each of the three groups. Of course, if you need additional, personalised advice on any of the meters, don't hesitate to get in touch with us!
1. Aquasearcher AB41PH Benchtop Meters
Suitable for: The OHAUS Aquasearcher AB41PH is an advanced, research-grade benchtop pH meter that offers accurate and repeatable results.
Key features & benefits:
The AB41PH is bolstered by the intuitive new i-Steward system that offers:
- password protection
- selectable resolution from 0.1 to 0.001
- highly consistent measurements and unbeatable accuracy.
In addition, the large 6.5” LCD screen facilitates easy access to data, even from a distance.
Aquasearcher AB41PH summary of features:
- Operation: Capacitive touch, ABS top housing, standalone electrode holder
- Communication: RS232, USB Device (included), GLP/GMP data output plus a real-time clock; and
- Other features: Selectable resolution, i-Steward, three endpoint modes, calibration due alert, 1,000 measurement memory, ten most recent calibrations, and password management.
Aquasearcher AB41PH specifications:
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Parameters |
pH/mV/ORP |
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Measurement range |
-2.000 – 20.000 pH; |
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Measurement resolution |
0.1 mV; |
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Accuracy |
±0.3 mV; |
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i-Steward: |
Calibration due alarm: Yes |
Aquasearcher AB41PH models:
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Aquasearcher AB41PH-F pH Benchtop Meter with pH Electrode and Temperature Probe |
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2. Aquasearcher AB33 Benchtop Meters
Suitable for: Highly Reliable and user-friendly, devices in the AB33 series are ideal for standard laboratory applications requiring a high level of accuracy.
Key features & benefits:
The AB33 Benchtop Meters are powered by intelligent, new i-Steward software that:
- ensures consistent measurement accuracy that is repeatable and reliable
- includes a 1000-item memory can store and retrieve vital sample data; and
- incredibly helpful calibration due alarms.
What’s more, the AB33M has a new dual-screen so that you can see pH and conductivity readings simultaneously.
Aquasearcher AB33 summary of features:
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Three model types for various applications
- pH measurement: AB33PH
- Conductivity measurement: AB33EC; and
- pH and conductivity measurement: AB33M1.
- Operation: Capacitive touch navigation, robust ABS top housing and a standalone electrode holder
- Communication: RS232 and USB Device (included)
- Other Features: i-Steward software, calibration due alarm, 1,000 measurement memory and two independent channels (AB33M1 only).
Aquasearcher AB33 specifications:
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Model |
AB33PH |
AB33EC |
AB33M1 |
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Parameters |
pH/mV/ORP |
Conductivity |
pH/Conductivity |
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Measurement range |
-5 °C – 110 °C; |
0.001 μS/cm – 1000 mS/cm |
-2.00 – 20.00 pH; |
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Measurement Resolution |
0.1 °C; |
0.001 μS/cm minimum; auto-range |
0.1 mV; |
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Accuracy |
±0.5 °C; |
±0.5% |
±0.3 °C; |
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i-Steward: |
Calibration due alarm: Yes |
Calibration due alarm: Yes |
Calibration due alarm: Yes |
Aquasearcher AB33PH benchtop meter models:
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Aquaresearcher AB33EC-F Conductivity Bench Meter with Conductivity Probe |
Aquasearcher AB33M1-F Multiparameter Bench Meter with pH and Conductivity Electrodes |
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3. Aquasearcher AB23 Benchtop Meters
Suitable for: The compact yet versatile AB23 benchtop meters are designed for everyday laboratory use and produce very reliable results.
Key features & benefits:
AB23 benchtop meters offer an intuitive and straightforward operating system, auto-buffer recognition, a new 3-point calibration capability (AB23PH) and auto temperature compensation (AB23EC) for extra accuracy. Finally, compact standalone electrode holders provide an extra dimension of measurement flexibility, making meters in the series useful in any workspace.
Aquasearcher AB23 summary of features:
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Two model types are offered for differing applications;
- pH: AB23PH
- Conductivity / TDS / Salinity: AB23EC.
- Operation: Six instructional menu buttons and a large 5-inch backlit LCD that presents comprehensive measurement information make AB23 meters simple to operate with results you can easily observe at a distance.
- Communication: N/A
- Other features: compact standalone electrode holder, auto buffer recognition (AB23PH only), auto temperature compensation (AB23EC only), and 99 measurement memory.
Aquasearcher AB23 specifications:
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Model |
AB23PH |
AB23EC |
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Parameters |
pH / ORP |
Conductivity / TDS / Salinity |
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Measurement range |
0 – 100°C; 0.00 – 14.00 pH; -1999 – 1999 mV |
00.0 μS/cm – 199.9 mS/cm |
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Measurement resolution |
0.1 °C; 0.01 pH; 1 mV |
0.01 μS/cm |
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Accuracy |
±0.5 °C; ±1 mV; ±0.01 pH |
± 1 % Reading ± 3 LSD |
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i-Steward: |
Calibration due alarm: N/A |
Calibration due alarm: N/A |
Aquasearcher AB23 benchtop meter models:
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AQUASEARCHER AB23EC-F Conductivity Benchtop Meter with Conductivity Probe |
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The Final Word
The Instrument Choice team are proud to offer our customers the new AquaSearcher benchtop meter series. This line of instruments' simple operation and compactness will save you time and precious lab bench space while producing consistent and accurate measurement data.
For more information on the AquaSearcher series or advice on suitability for your application, speak with an Instrument Choice Scientist: Call 1300 737 871 or email customer-service@instrumentchoice.com.au.