Hanna Instruments COMBO Tester for pH/EC/TDS/C°
The Hanna Instruments COMBO Tester for pH/EC/TDS/C° combines several measuring functions in one compact device, making it a space-saving alternative to conventional individual measuring devices. With automatic temperature compensation, stability-supported display and a robust, waterproof design, this combination device meets high demands in laboratories, environmental analyses or industrial processes. Similar wide-ranging features to the [HI98130 - High Range Tester] make the device stand out and make it a reliable choice for many applications.
Precise measurements for versatile applications
This combination tester enables the simultaneous recording of pH value, conductivity (EC), TDS (total dissolved solids) and temperature. This not only saves space, but also optimizes processes as several measuring instruments are combined in a single, user-friendly device. Thanks to the replaceable pH electrode and graphite conductivity sensor, maintenance remains manageable and measurement errors are minimized. Users also benefit from the following features:
- Automatic temperature compensation: Guarantees reliable corrections in the event of temperature fluctuations.
- Waterproof housing: The device floats and is easy to recover if accidentally dropped.
- Retractable textile diaphragm: Extends electrode life by simply exposing a fresh layer of membrane.
- Automatic switch-off: Saves energy by shutting down the device after 8 minutes of inactivity for safety reasons.
- Stability indicator: Warns with an hourglass symbol until the measured values are constant.
- High accuracy: Thanks to pH measurement resolution of 0.01 and conductivity accuracy of ±2% within the measuring range.
- Intuitive operation: A large LCD and a HOLD function help with quick reading and documentation.
The universal concept of this tester increases efficiency in routine controls, quality assurance processes and environmental measurements alike. Thanks to the replaceable pH electrode, the device does not have to be disposed of completely when the electrode is worn out, which is particularly cost-saving.
An overview of the key technical data
The following points, which are of particular interest to many specialist users, give you a quick overview of the most important parameters and functions:
- pH measuring range from 0.00 to 14.00 (accuracy ±0.05, resolution 0.01)
- Conductivity measuring range from 0 to 3999 µS/cm (accuracy ±2 %)
- TDS measuring range up to 2000 mg/l (ppm), conversion factor freely adjustable between 0.45 and 1.00
- Temperature measuring range from 0.0 to 60.0 °C (accuracy ±0.5 °C)
- Automatic calibration, optionally one- or two-point with common buffer solutions (pH)
- Easy to maintain design thanks to replaceable pH electrode HI73127
- Compact form factor (163 x 40 x 26 mm, 100 g) with floatable housing
Further details, such as the customizable β-setting for conductivity-temperature compensation and the modification options for the TDS conversion factor, enable tailor-made measurements under different conditions. This offers a considerable advantage, especially in laboratories or production facilities where several solution types need to be measured.
Application examples
- Water analysis in aquariums: The pH and EC values in freshwater or saltwater aquariums can be checked quickly to ensure optimal living conditions for fish and corals.
- Food and beverage production: Measure the pH or salt content of fermented products to ensure consistent quality.
- Hydroponics: Both conductivity and pH value can be monitored to ensure balanced dosing of plant nutrients.
- Monitoring of cooling circuits in the industrial sector: The tester makes it easy to check the water quality in terms of pH and conductivity.
FAQs
How often should the tester be calibrated?
Calibration should be carried out regularly, especially if the tester is used daily. As a rule, weekly or fortnightly calibration is sufficient. For high accuracy requirements or frequent changes of measuring solution, calibration before each series of measurements is recommended.
Is the device suitable for use in outdoor environments?
The waterproof housing makes outdoor use possible without any problems. The tester even floats if it should fall into water, preventing accidental sinking.
How do I replace the pH electrode?
Thanks to the tool provided, you can easily remove the old pH electrode and insert a new one. Make sure to place all seals correctly to maintain the water tightness.
Can I set the TDS conversion factor individually?
Yes, the conversion factor can be set between 0.45 and 1.00. This allows you to adjust the total dissolved solids content to your specific measurement solution.
Conclusion
The combi tester offers high performance in a compact format and eliminates the need to purchase multiple measuring instruments. The combination of pH, EC, TDS and temperature measurements ensures fast, reliable and user-friendly controls. Both laboratory and industrial applications benefit from a maintenance-friendly design and flexible adjustability of the measurement parameters. This makes this instrument a cost-effective and high-quality long-term solution for anyone looking for a robust, versatile and precise measuring device.
