Leak-Free Reference Electrodes

Leak-Free Reference Electrodes

Eliminate problems associated with the use of conventional porous junction-based reference electrodes.

  • Eliminates:
    • clogging
    • sample contamination
    • electrolyte loss
    • changing of ionic strength of the sample
    • difficulties with organic based solvents

Item# Description U.S. List Price Quantity
69-0053 Leak-Free reference electrode, 1 mm diameter, 100 mm length, 1 mm gold plated pin, < 10 k© resistance (LF-1)
69-0023 Leak-Free reference electrode, diameter 2 mm, length 65 mm, 1 mm gold plated pin, resistance < 10 k&Omega (LF-2)
69-0025 Low-leakage reference electrode, 5 mm diameter, 130 mm length, 2 mm pin, < 1 kΩ resistance (KZT-5)
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Leak Free electrodes utilize a unique junction that is highly conductive (10 KΩ) but not porous. There is no solution migrating through the junction in either direction. The reference is totally leak free! The junction is resistant to most commonly used organic solvents. It offers excellent resistance to acetonitrile, DMSO, THF, MEK, acetone, dichloromethane, esters, alcohols, and ketones, hydrofluoric acid or common dilute acids and bases.

Unlike conventional reference electrodes, there is no need to store Leak Free electrodes in concentrated chloride solution. If the electrode is left dry for a long period of time, it should be immersed in water for few hours to recover.

Two sizes of Leak Free reference electrodes are available as are other custom configurations.

Low-Leakage Reference Electrodes

The Low-Leakage Reference Electrodes are for use in applications where contamination would interfere with the application. The electrode junctions are resistant to most commonly used organic solvents. They offer excellent resistance to acetonitrile, DMSO, THF, MEK, acetone, dichloromethane, esters, alcohols, and ketones. Hydrofluoric acid or common dilute acids and bases have no effect on the on these electrodes. Two low-leakage reference electrodes are available. One is 2 mm (0.08 in) in diameter and the second is 5 mm (0.2 in) in diameter. Other custom configurations of the low-leakage reference electrodes are available.

Specifications
Reference
Electrodes
Low-Leakage Leak-Free
Part Number KZT-5 LF-1 LF-2
Order Number 69-0025 69-0053 69-0023
Diameter 5 mm 1 mm 2 mm
Length 130 mm 100 mm 65 mm
Material PEEK* PEEK* PEEK*
Leakage
Rate
5 x 10-12
L/min
0
None

 

0
None

 

Filling
Electrolyte
3 M KCl 3 M KCl 3 M KCl
Electrical
Connection
2 mm pin 1 mm gold
plated pin
1 mm gold
plated pin
Junction
Resistance
< 1 kΩ** < 10 kΩ** < 10 kΩ**
Temperature
Range
5° to 80°C 5° to 80°C 5° to 80°C
Storage 3 M KCl Distilled
Water
Distilled
Water
Reference potential relative
to the H+ standard
About 242 mV
* Polyetherether Ketone
**In 1 M potassium chloride