The HI1131B Refillable Combination pH Electrode is a high-quality, glass-bodied electrode designed for accurate and reliable pH measurements in general laboratory applications. Featuring a universal BNC connector, it ensures quick and easy compatibility with most pH meters and controllers.
This electrode is constructed with high temperature (HT) glass, making it suitable for measurements in elevated temperature conditions while maintaining durability and extended probe life. The spherical glass bulb design provides a larger contact surface with the sample, resulting in faster response time and improved measurement stability.
The glass body offers excellent chemical resistance, is easy to clean, and quickly reaches thermal equilibrium for consistent readings. The HI1131B incorporates a double junction reference system with a single ceramic frit, allowing steady ion flow and minimizing contamination risks between the reference electrolyte and sample.
Being refillable, this electrode uses 3.5M KCl electrolyte (HI7082), which is free from silver ions. This prevents clogging at the junction and ensures stable, drift-free readings over extended use. The refillable design also extends the electrode’s lifespan and reduces maintenance costs.
Ideal for routine laboratory testing, the HI1131B provides dependable performance, easy maintenance, and long-term reliability.
