Hanna Refillable Combination pH Electrode with BNC + Pin Connector - HI1131P

Hanna HI1131P Refillable Combination pH Electrode is a high-precision sensor engineered for accurate pH measurement in laboratory and high-temperature applications. Designed with a durable glass body and a double junction reference system, this electrode ensures reliable and stable performance in demanding analytical environments where precision and consistency are essential.

The electrode features a spherical high-temperature glass tip (9.5 mm diameter), allowing fast response and optimal contact with sample solutions. With an operating temperature range of 0 to 100°C, it is well-suited for applications involving heated samples and rigorous laboratory procedures. The double junction Ag/AgCl reference system combined with a single ceramic junction ensures a steady electrolyte flow rate of 15–20 µL/h, minimizing contamination and maintaining measurement accuracy over extended use.

Equipped with both BNC and pin connectors, the HI1131P is fully compatible with CAL Check™ enabled meters such as HI2221, HI2222, and HI2223. The pin connector activates CAL Check functionality, allowing users to verify electrode performance and ensure measurement reliability. The 1-meter coaxial cable provides flexibility for convenient benchtop setup and operation.

The refillable design using 3.5M KCl electrolyte extends electrode lifespan and supports consistent, repeatable results in continuous laboratory workflows. Its glass body construction offers excellent chemical resistance and ease of cleaning, making it suitable for a wide range of sample types.

Widely used in chemical analysis, water quality testing, research laboratories, agriculture, and educational institutions, the HI1131P electrode delivers dependable performance for both routine and advanced pH measurement tasks.

Enhance your laboratory analysis with Hanna’s reliable and high-performance electrode, designed for precision, durability, and long-term use as part of pH Electrodes