Hanna Instruments network-compatible pH/ORP meter HI6221
The compact desktop device for pH, ORP and temperature measurements combines high precision with user-friendly operation. Thanks to the Ethernet and Wi-Fi connection, seamless data acquisition and transfer is possible in everyday laboratory work. If you need a reliable measuring device with flexible data communication, you've come to the right place. The combination of galvanically insulated pH electrode and stainless steel temperature probe allows precise measurements even in challenging samples. Similar features to the [Hanna Instruments HI5222] offer comparable measurement ranges, but without the comprehensive network interface of this model. This comprehensive connectivity enables fast and accurate transfer of measurement data, which is particularly useful in larger laboratories with multiple workstations. Unlike the [Hanna Instruments Edge multiparameter meter], dedicated interfaces for Ethernet, Wi-Fi and USB are available here, enabling a wider range of applications.
Convincing features and technical details
This device is specially designed for laboratories and facilities that need to perform a variety of measurements precisely and quickly. Its robust housing allows it to stand securely, while the ergonomically designed holder ensures electrode flexibility. Some key features are summarized below:
- Measurement of pH and ORP (mV/Rel. mV) with a choice of automatic or manual temperature compensation (ATC)
- Simple calibration up to five points with automatic recognition of common standard and NIST buffers
- Data acquisition with at least 1,000,000 data records, storable on the device or exportable via USB stick, FTP or email
- 7-inch touchscreen with multi-touch support, clear menu navigation and various views such as live graphics or tabular display
- Warning and alarm functions for measurements outside defined limit values
- HI1131B glass electrode with high-quality high-temperature glass for metal-containing or high-temperature samples
- Durable stainless steel temperature probe HI7662-TW for precise and fast temperature measurement
- Connection options: USB type A, USB type C, RS232, Ethernet and Wi-Fi
Of particular note is the galvanic isolation of the pH/ORP connection, which minimizes interference and therefore guarantees greater measurement accuracy. In addition, the device also offers an integrated memory for calibration information, which reliably records all relevant GLP (Good Laboratory Practice) data. This includes information such as date, time and buffers used. With automatic logging in the background, laboratory staff can focus all their attention on sampling and evaluation without having to worry about data loss.
In terms of standards and certifications, the system usually complies with common CE standards; it is designed to meet strict quality requirements in the laboratory environment. The optional alarm function complements the safety aspects by warning of measured values outside certain tolerances.
Application examples
- Quality testing in water treatment: monitoring the pH value and redox potential in wastewater treatment plants to fine-tune chemical additives.
- Food analysis: Certified laboratories can use the device to monitor the pH value of sensitive emulsions (e.g. in dairy products) or test acidity levels.
- Research and teaching: Universities and universities of applied sciences often rely on reliable pH and redox measuring devices to enable students to carry out practical experiments in chemistry, biotechnology or environmental technology.
- Pharmacological applications: When testing samples with fluctuating temperatures, such as in reactors, the high-temperature glass electrode guarantees consistent results.
FAQs
How often does a calibration need to be carried out?
The calibration intervals can be set individually. The integrated calibration reminder is recommended after one to two weeks at the latest or whenever the measurement conditions change significantly.
Can dissolved gases or other substances influence the measurement?
Yes, highly reactive substances and dissolved gases can change the pH value. In such cases, regular cleaning and maintenance of the electrode is required to obtain accurate results.
Can data acquisition be automated?
The integrated options (manual, automatic, autohold) can be used to set measurement intervals and continuously log measurement data. File transfer via USB, FTP or email enables automated evaluation.
Which temperature ranges does the temperature compensation cover?The automatic temperature compensation can be used from -20 to 120 °C. This is particularly practical when samples need to be measured in hot or very cold environments.
Is multiple use possible at different measuring stations?
The range of network interfaces allows the device to be used flexibly in different laboratory environments. After adapting the WLAN or Ethernet network, data can be exchanged or backed up at any time.
Conclusion
This flexible and networked solution enables high-quality pH and ORP measurement with intuitive operation. The extensive connection and storage options ensure that time and resources are used optimally, especially in demanding laboratory environments. At the same time, the robust sensors guarantee consistently high measurement accuracy over the entire period of use. Anyone looking for a versatile and reliable laboratory device with a wide range of data export functions is making a future-proof investment with this choice.
