PHB-31 Portable pH Meter: Smart Diagnosis, ATC/MTC, GLP, USB

Metalsin‘s PHB-31 portable pH meter is a high-performance, IP65 waterproof handheld meter that bridges the gap between portable convenience and laboratory-grade sophistication. Designed for rigorous outdoor measurements, it features a clear 3.5-inch LCD display and a versatile 1-5 points calibration system with automatic standard recognition, ensuring total reliability in any environment.

PHB-31 portable pH meter with protection case, wristband and multiple buffers.

Smart Diagnostics and Thermal Precision

The PHB-31 stands out with its Automatic Electrode Diagnosis system, which provides a real-time display of the pH slope and offset. This feature acts as an “early warning system,” allowing users to monitor sensor health and prevent inaccurate readings caused by aging or contaminated electrodes. Coupled with both Automatic and Manual Temperature Compensation (ATC/MTC), the meter ensures that your results are mathematically corrected for temperature fluctuations, providing absolute precision whether you are testing mountain raw water or industrial effluent.

GLP-Compliant Data Integrity and USB Communication

To support modern regulatory requirements, the PHB-31 offers a robust data management suite with a capacity of 500 data sets per parameter. The system is fully GLP-compliant, ensuring that every measurement is recorded with the traceability required for environmental audits in wastewater or municipal water plants. Furthermore, the integrated USB communication port allows for seamless data transfer to external devices, making it easy to archive field results or integrate them into centralized management systems.

Rugged Versatility for Field Analysis

Engineered for the reality of field work, the PHB-31 is packed with efficiency-boosting features. Its multi-reading system allows for auto-read, timed-read, and continuous-read modes, while the auto-hold feature intelligently locks the measurement endpoint for stable recording. To maximize operational uptime, the device includes an auto-power off function to extend battery life and a one-touch reset feature to quickly restore factory defaults. Whether you are navigating a remote lake or a treatment plant, the PHB-31 is the definitive tool for durable, high-accuracy pH monitoring.

Technical Parameters & Operation Manual