Hanna Instruments Portable pH Meter for Leather and Paper HI99171
The Hanna Instruments Portable pH Meter for Leather and Paper HI99171 provides accurate pH and temperature measurement specifically for flat surfaces. Whether in tanneries, in paper production, in the laboratory or for quality control, this compact meter impresses with its rapid readiness for use and robust design. Compared to other mobile pH meters, this model leaves nothing to be desired thanks to its watertight Quick DIN connection and reinforced flat membrane electrode. The [HI99163] has a similar design, with a measuring range and electrical connections comparable to this model, but can be designed for other materials.
Performance characteristics and special features
The design of this measuring device is based on practical requirements in the leather and paper industry. From the ergonomic design to the user-friendly menu navigation, everything is designed to deliver precise and reliable measurement results. With its IP67 housing, it can withstand even harsh environments and boasts the following key features:
- Special flat membrane electrode (HI14143) with stainless steel housing for optimum surface contact.
- Waterproof Quick DIN connection for uncomplicated electrode replacement.
- Fully automatic temperature compensation for reliable results.
- Large multilevel LCD for simultaneous display of pH value and temperature.
- Robust IP67 housing for reliable protection against dust and water.
- Simple two-button control for pH and temperature measurement.
- Automatic switch-off functions (8 minutes, 60 minutes, deactivated) for longer battery life.
The meter is supplied as standard with calibration solutions, cleaning solutions, sturdy transportation box and batteries. This means it can be put into operation immediately, which saves a lot of time, especially in demanding production environments. The electrode status display also ensures that measurements are always taken with a flawless electrode.
Technical overview
This pH meter measures in a range from pH -2.0 to 16.0, while the resolution is either 0.1 or 0.01 pH increments. Automatic one- or two-point calibrations enable easy quality assurance of the measured values. Thanks to its compact dimensions (154 x 63 x 30 mm) and weight of just 196 g, the device is easy to transport and can be conveniently used on site. The most important technical data at a glance:
- pH measuring range: -2.0 to 16.0
- pH resolution: 0.1 / 0.01
- pH accuracy: ±0.02 / ±0.1
- mV range: ±825 mV
- Temperature range: -5.0 to 105.0 °C
- Electrical connection: Quick-DIN for secure, watertight connection
- Battery life: approx. 1400 hours (1.5 V AAA x 3)
For those who measure in heavy-duty environments and are looking for a long service life of the device, the sturdy workmanship of the housing and the electrode design provide a reliable complete solution.
Certifications and standards
The housing meets the requirements of IP67: this standard guarantees a high level of protection against dust and temporary immersion in water. The accuracy parameters are verified by the manufacturer's in-house standards. This ensures a high level of measurement repeatability for use in quality management systems, laboratories or production-related departments.
Concrete application examples
- Leather production: determining the pH value during the tanning process to optimize chemical treatment and produce high-quality leather
- Paper production: checking pH values during pH sizing and testing the surface quality of specialty papers.
- Printing and packaging industry: testing paper rolls before printing to ensure ink adhesion and color intensity.
- Laboratory environment: examination of flat samples that cannot be immersed in a classic vessel, for example filter paper, pieces of leather or impregnated cloths.
FAQs
How is the calibration carried out
?
You can choose between a one-point or two-point calibration. There are pH buffers available with the reference values 4.01, 7.01, 10.01 or 4.01, 6.86, 9.18.
Does the electrode need to be cleaned frequently?
Residue can stick to the flat membrane, especially with leather and paper samples. Regular cleaning with the cleaning solutions provided increases the service life and accuracy of the electrode.
What is the service life of the battery?
The meter works with three 1.5 V AAA batteries. Under continuous operation, this set lasts around 1400 hours. In addition, various energy-saving options are available to extend the battery life.
What temperature ranges does the device cover?
Measurements from -5.0 to 105.0 °C are possible. The integrated temperature sensor ensures automatic compensation, which is particularly advantageous in changing operating conditions.
Conclusion
This mobile pH meter is ideal for anyone who needs accurate pH and temperature values in the leather and paper industry or laboratory-based environments. Thanks to its robust design, precise flat membrane electrode and integrated Quick DIN connection, it scores highly in terms of both durability and measurement accuracy. With its intuitive operation and IP67-protected housing, the device is a reliable solution for achieving consistent and reproducible results every time.
