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HI5412

Glass Body Calomel Reference Electrode for Measurements with Remote Filling

$125.00

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The HI5414 is a glass body, refillable, double junction, half-cell reference electrode with a 4 mm banana connector. This electrode has a double ceramic junction in the outer reference cell, calomel references, and side arm construction.

 


This design consideration is made for use in applications that require remote filling in temperatures ranging from -5 to 60°C.
  • Refillable Electrode
  • Calomel References
  • Side Arm Construction

Details

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 HI5412 uses a glass body, single ceramic junction, calomel references and is refillable with 3.5M KCl.

glass body

Glass Body

The glass body is ideal for laboratory use. The glass is resistant to many harsh chemicals and is easily cleaned. The glass body also allows for a fast transfer of heat to the internal reference electrolyte. The mV generated by the reference cell is temperature dependent. The faster the equilibrium the steadier the reference potential.

 

single ceramic

Single Ceramic Junction

The outer junction of an electrode, also known as a salt bridge, is 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 is easily fused with the glass body and has a similar expansion coefficient. A single ceramic junction has a flow rate of 15-20 µL/hour. Other junction types are available with higher flow rates and made with different materials.

 

refillable

Refillable

The HI5412 is a refillable reference electrode. Since it is a double junction electrode the fill solution is the HI7082 3.5M KCl. This solution does not contain any silver as with single junction electrode. The absence of silver will prevent any silver precipitate from forming at the junction surface and clogging it. Clogging of the junction will result in drifty and erratic readings.  

4 mm Connector

The HI5412 uses a 4 mm banana connector. This type of connector is easily plugged into the reference input on suitable meters. Other type 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.


 

half cell electrode

Specifications

Body Material glass
Reference single, Hg/Hg₂Cl₂
Junction / Flow Rate ceramic, single / 15-20 μL/h
Electrolyte 3.5M KCl
Max Pressure 0.1 bar
Diameter 12 mm
Body Length / Overall Length 120 mm / 175.5 mm
Recommended Operating Temperature -5 to 60°C (23 to 140°F)
Cable 1 m (3.3')
Connection Banana
Applications general purpose, titrations
Warranty 6 months

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