Hanna HI1131S Refillable combination pH electrode

Hanna HI1131S Refillable combination pH electrode

The Hanna HI1131S Refillable combination pH electrode serves as a reliable, refillable combination pH electrode for general laboratory use. It features a single junction reference, a ceramic junction, and a spherical glass sensing tip, which together provide precise and consistent pH measurements. With a durable glass body, a wide pH range, and a high operating temperature capacity, this electrode supports a variety of testing environments.

Key Features

• Screw Cap Connection: This secure screw-cap connector simplifies attachment to compatible meters and ensures a tight fit for stable readings in benchtop setups.

• Refillable Electrolyte System: Users can refill the 3.5M KCl + AgCl solution, which helps extend the electrode’s lifespan and maintains measurement accuracy over time.

• Consistent Ceramic Junction: The ceramic junction ensures a steady electrolyte flow rate of 15–20 µL/h, which supports stable performance in general aqueous samples.

• Spherical Glass Tip (9.5 mm): Its rounded shape ensures proper contact with various sample surfaces, making it suitable for use in flasks, beakers, or sample tubes.

• Wide Operating Range: The electrode supports measurements across pH 0 to 13 and temperatures up to 100°C, offering versatility in both routine and specialized testing scenarios.

• Glass Body Durability: The chemically resistant glass body allows for easy cleaning and long-term use in diverse lab conditions.

• No Built-in Electronics: This model offers a clean signal without an amplifier or built-in temperature sensor, making it a straightforward option for users who rely on external compensation features from their meters.

Technical Specifications

Applications

• Academic and Research Labs: Scientists and students can depend on this electrode for consistent pH readings during experiments and instructional work.

• Water Quality Testing: Environmental technicians can use it to check the pH of drinking water, surface water, or lab-grade process water.

• Chemical and Biological Analysis: Analysts benefit from its high temperature tolerance when testing a variety of reagents, acids, or bases.

• Education and Training: Instructors choose this model for its simplicity, durability, and compatibility with standard lab equipment.