Overview
The Hanna Instruments HI2111 is a precision glass body pH half-cell electrode engineered for reliable pH measurement across laboratory and field applications. As a half-cell design, it requires pairing with a compatible reference electrode to complete a measurement system. Made with high temperature glass, it is designed for use in strong alkaline solutions as well as for general purpose measurements.
Key Features
- High temperature (HT) glass formulation with spherical bulb and glass body
- Spherical bulb design for general purpose use, with optional conic tip for penetration and flat tip for surface measurements
- Glass body ideal for laboratory use—resistant to many harsh chemicals and easily cleaned
- Allows fast transfer of heat to the internal reference electrolyte, enabling rapid electrode equilibrium and steady reference potential
- Half-cell configuration for integration with separate reference electrodes
Technical Specifications
- Temperature Range: 0 to 100°C
- Glass Type: High temperature (HT) glass, ~400 megaohms resistance at 25°C
- Body Material: Glass
- Electrode Type: pH half-cell (sensing electrode only)
- Bulb Shape: Spherical
- Application: General purpose and strong alkaline solutions
Typical Applications
The HI2111 is suitable for:
- Laboratory pH analysis and quality control
- Industrial process monitoring
- Water and wastewater testing
- Chemical batch analysis
- Research and development environments
Compatibility & Replacements
Compatible With
- Hanna Instruments pH meters with BNC probe input connectors
- Any third-party meter featuring female BNC electrode input
- Laboratory pH measurement systems requiring half-cell electrodes
Replaces / Drop-In Replacement For
The HI2111 is succeeded by the HI2111B (enhanced BNC variant). For exact compatibility with your existing system, verify connector type and reference electrode pairing before ordering.
Works With
- Hanna Instruments reference half-cell electrodes
- BNC-compatible pH meters and benchtop analyzers
- Standard laboratory calibration buffer solutions (pH 4, 7, 10)
