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HI5412 Glass Calomel Electrode

Producer: HANNA Instruments

SKU: HANNA-HI5412 Category: Hanna experimental measuring equipment

The HI5412 is a glass body, refillable, double junction half-cell reference electrode with a 4 mm banana connector. This electrode has a single ceramic junction in the outer reference cell and calomel reference.

Use with ion selective electrodes, titrations, and general applications with temperatures ranging from -5 to 60^oC

Half-cell electrode

Caloric reference

Single ceramic joint

Hanna Instruments offers a line of pH electrodes designed for a variety of applications. The type of glass used for the pH sensor, bulb shape, body material, type of junction, type of reference, and electrolyte used are among the design considerations.

The HI5412 has a glass body, single ceramic junction, calomel reference and is refillable with 3.5M KCl.

Glass body

The glass body is ideal for laboratory use. The glass is resistant to many harsh chemicals and can be easily cleaned. The glass body also allows for rapid heat transfer to the internal reference electrolyte. The mV generated by the reference cell is temperature dependent. The reference potential is stabilized more quickly than equilibrium.

Single ceramic joint

The junction, also known as a salt bridge, is an essential component of the electrical circuit. The movement of ions must flow through the junction for a stable value. The external reference has a single ceramic frit. The ceramic is a porous material that can be easily fused to the glass body and has a similar expansion coefficient. A single ceramic junction has a flow rate of 15-20 µl/hour. Other types of junctions are available with higher flow rates and are made of different materials.

Refillable electrolysis

The HI5412 is a refillable probe. Since it is a double junction pH electrode, the fill solution is the HI7082 3.5M KCl. This solution does not contain silver as with single junction electrodes. The absence of silver prevents silver precipitates from forming at the junction and clogging. Clogging of the junction will result in drifty and erratic readings.

4mm connector

The HI5412 uses a 4 mm banana connector. This connector easily attaches to any meter with a reference input. Other connectors include DIN, screw type, T-type, and 3.5mm. Each meter typically has a unique connector and cannot be interchanged.

SPECIFICATIONS

Body material	Glass
Reference	Single, Hg/Hg₂Cl₂
Splice/Line Speed	ceramic, single/15-20 μL/h
electrolysis	3.5M KCl
Maximum pressure	0.1 bar
Diameter	12mm
Body length/total	120mm / 175.5mm
Operating temperature	-5 to 60°C (23 to 140°F)
Cable	1 m (3.3')
Connect	banana
Guarantee	06 months
Application	General purpose, titration