WTW inoLab® pH 7310 Set laboratory pH meter
Introduction
This pH meter enables high-precision measurements and is characterised by its exceptional reliability and user-friendliness. It is primarily intended for use in professional laboratories where exact pH values are crucial for research, quality control and other demanding applications. Compared to similar devices, it impresses with comprehensive calibration functions, flexible data storage and a robust design that ensures consistent and reproducible measurement quality.
Application and performance features
The measuring device offers a comprehensive range of functions and performance data for reliable pH analysis. Its highlights include exceptional measurement accuracy, which is evident in the pH range as well as in temperature and mV measurements. The stability indicator provides clear feedback on when a measured value can be reliably read. This performance is complemented by a generous data memory that securely stores measurement data as well as calibration data. Multi-stage calibration options - from 1- to 5-point calibrations - allow the measurement results to be optimally adjusted to different buffer solutions, for example according to DIN or NIST. Compatibility with various electrodes, in particular the proven SenTix® electrodes, enables a wide range of applications and individual adaptation to specific sample requirements.
Core technical data at a glance
- pH measuring range: -2.0 ... 20.0 up to -2.000 ... 19.999
- pH resolution: 0.1 / 0.01 / 0.005 pH units
- pH accuracy: ±0.005 or ±0.01 pH units
- mV measuring range: ±1200.0 mV
- mV accuracy: ±0.3 or ±1 mV
- Temperature measuring range: ±(2500 ±1) mV
- Temperature accuracy: ±0.1 K
- Calibration: 1 to 5 points, including DIN, NIST and WTW technology buffer variants
- LIMS connection for seamless data acquisition and documentation
In addition, the device supports the secure transfer of measured values and calibration data. With the appropriate software, reliable quality control can be carried out, making the system an important instrument in any professional analysis.
The robust housing is ideal for everyday laboratory use, where splashes and repeated disinfection processes are inevitable. Despite its solid construction, the meter remains easy to clean and therefore meets high hygiene requirements. This factor is particularly relevant when working with sensitive samples or biological materials, where contamination must be avoided at all costs.
Certifications and standards
The measuring system complies with the relevant DIN and NIST standards, which is crucial for standardised and internationally comparable measurement quality. Thanks to these certifications, laboratories can rely on accurate and reproducible results, independent of external tests or audits. Anyone who performs standard-compliant pH measurements in QA or research facilities therefore benefits from the high reliability and traceability of this system.
Application examples
- Research and development: In laboratories that work intensively with enzymes, cell cultures or buffer-dependent processes, accurate pH determination is essential. With its finely resolvable measuring ranges, this measuring device provides an optimal basis for precisely adjusting the reaction conditions.
- Quality control: The pH value plays a critical role in production monitoring in the food industry or in pharmaceutical processes. The system enables complete documentation thanks to its LIMS connection, thus ensuring audit-compliant records.
- Education: In training laboratories at universities and technical colleges, the device can be used to carry out both simple basic experiments in the pH range and more complex practical work on multi-point calibration. In addition, the detailed documentation options teach students how to use modern laboratory standards correctly.
- Routine measurements in environmental analysis: Whether water samples in the context of wastewater monitoring or samples from rivers and lakes - as soon as an exact laboratory evaluation of the pH value is required, the device offers the necessary precision and repeatability.
FAQs
How often should calibration be performed?
The frequency depends on the application and the quality standards in the laboratory. As a general rule, it is recommended to perform at least one calibration check before each series of measurements. For particularly sensitive measurements or frequent temperature extremes, daily multi-point calibration may be advisable.
What should be considered when cleaning?
All contact surfaces, especially the electrode connector and the electrode itself, should be cleaned regularly with suitable cleaning agents. This ensures that residues from samples or buffer solutions do not falsify the measurement result.
Can the device also be used for pure redox (ORP) measurements?
Yes, thanks to the mV measuring range, ORP measurements are possible provided that a suitable redox electrode is connected. The accuracy in the mV range allows precise recording of redox potentials for a wide variety of applications.
Can documentation be automated?
Measured values can be transferred to laboratory management systems (LIMS) via the integrated interface. This creates a continuous digital workflow that can be optimally integrated into an existing quality management system.
Conclusion
The measuring device combines precision, user-friendliness and robustness to create a reliable laboratory solution for a wide range of pH analyses. With multi-stage calibration and extensive data storage functions, it offers a high degree of flexibility for university, industrial and research-oriented applications. Those who value standardised and highly accurate measurement results will benefit from the excellent design and standard compliance of this laboratory instrument. The WTW inoLab® pH 7310 Set laboratory pH meter is therefore recommended as a core component in any professional laboratory that demands both quality assurance and user-friendliness.
