PEI Body Reference Electrode
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Hanna Instruments offers a wide variety of pH electrodes that are designed for many different applications. The type of glass used, body material, type of junction, type of reference and electrolyte used are just some of the design considerations.
The HI5313 uses a PEI body, single ceramic junction and stable gel electrolyte.
PEI Body
The body of the HI5313 is composed of polyetherimide (PEI) resin. The PEI body is suitable for a wide range of applications and excels in field measurements due to its durability. The shielding around the spherical glass tip minimizes breakage due to accidental bumping or dropping of the electrode. The PEI plastic is a high-quality plastic that is chemically resistant to many aggressive chemicals.
Ceramic Junction
The outer junction of an electrode, also known as a salt bridge, is a necessary component of the electrical circuit. The movement of ions must flow through the junction for a steady reading. The outer reference has a single ceramic frit. The ceramic is a porous material that has a flow rate of 15-20 μL/hour. Other junction types are available with higher flow rates and made with different materials.
4 mm Connector
The HI5313 uses a 4 mm banana connector. This type of connector is easily plugged into the reference input on suitable meters. Other types of connectors include BNC, DIN, screw type, T-type, and 3.5mm to name a few. These types of connectors tend to be proprietary for a particular type of meter and are not interchangeable.
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