Hanna HI1131B Refillable Combination pH Electrode

Hanna HI1131B Refillable Combination pH Electrode

The Hanna HI1131B Refillable Combination pH Electrode is a refillable glass-body combination pH electrode specifically designed for general laboratory use, with added performance benefits in beverage applications such as beer and wort testing. Featuring a double junction reference, ceramic junction, and spherical sensing tip, this electrode delivers accurate and stable measurements across a full pH range. Thanks to its high-temperature glass, it also performs reliably in heated samples up to 100°C.

Key Features

• Refillable Electrode Design: Unlike gel-filled models, the HI1131B uses a 3.5M KCl liquid electrolyte, allowing users to extend the electrode’s life through routine maintenance.

• Double Junction System: This configuration helps prevent contamination of the reference cell, making it ideal for measuring complex samples such as beverages or solutions with proteins and sulfides.

• High-Temperature Glass (HT): Optimized for measurements from 0 to 100°C, the HT glass ensures a fast response even in elevated temperature environments.

• Spherical Glass Tip (9.5 mm): Provides maximum contact area for stable readings in both flat and curved sample containers like beakers, flasks, and cylinders.

• Standard BNC Connection: The HI1131B comes equipped with a BNC connector, offering compatibility with most laboratory pH meters.

• Glass Body Construction: Chemically resistant and easy to clean—suitable for repeated lab use.

For models with built-in temperature sensors or amplifiers, refer to the related electrodes:

• HI1131P: BNC + pin (CAL Check™ compatible)

• HI11313: Quick Connect DIN with amplifier and temperature sensor

• HI1131Y: BNC + RCA with built-in thermistor

Technical Specifications

Applications

• Academic and Industrial Laboratories: Ideal for pH measurement in chemical, environmental, and biological samples under standard lab conditions.

• Brewing and Beverage Testing: Particularly effective for testing wort, beer, and other fermentation-based samples due to its contamination-resistant junction.

• Water Quality and Process Control: Suitable for monitoring pH in water treatment, production lines, and quality assurance processes.