Reference Electrode, Saturated Calomel, Single Junction
Part Number
RREF0022
The standard-sized, single junction, saturated calomel (Hg2Cl2) reference electrode is filled with 4M KCl. The refrerence electrode body is 9.5 mm OD, therefore ideally used with Standard volume electrochemical cells. The reference electrode is designed to be pass through a 14/20 ground glass joint and held in place by the included PTFE adapter, which can be adjusted to control the immersion depth of the reference electrode into the cell. Pine Research recommends proper storage and use of reference electrodes. A variety of useful tools for storage and care are shown below.
Product Parts List
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Warning: Product Contains Mercury
To function properly, this electrode necessarily contains a small amount of mercury. The maximum amount of mercury in this electrode is 1.8 grams. Use proper personal protective equipment during use. Store safely. Follow all environmental waste protocols and procedures.
Compatibility Notice
Avoid using this reference electrode with the following: acids, cations that will form insoluble hydroxides, and non-aqueous/organic solvents
Best Practice Suggestion: Employ a Laboratory Master Reference Electrode
A master reference electrode is a pristine, unused electrode kept exclusively to verify the accuracy of your active laboratory electrodes. By periodically measuring the potential difference between your everyday electrodes and the master in a shared electrolyte solution, you can quickly detect degradation and prevent experimental errors. To maintain its reliability as your ultimate baseline, the master electrode must never be used in actual experiments.
Compatible with Salt Bridge Kit
This reference electrode is compatible with the Salt Bridge Kit. A salt bridge enables use of a reference electrode in challenging conditions such as elevated temperature, solvent incompatibility, and chemical contamination risk.
Reference Electrode, Saturated Calomel, Single Junction
Reference Electrodes
Product Reference chemistry
Hg₂Cl₂ (calomel)
Product Standard potential
+241 mV vs NHE
Product Reference size type
Standard (9.5 mm OD)
Product Reference electrode body diameter
9.5 mm
Product Reference electrode length
19 cm
Product Reference frit material
Ceramic
Product External fill solution
4 M KCl
Product Refillable
yes
Product Typical variance
±3 - 5 mV
Product Typical input impedance
< 10 kΩ
Product Reference electrode connection style
1.6 mm OD x 8.5 mm long brass pin
Product Reference electrode body material
borosilicate glass
4M Potassium Chloride Reference Electrode Filling SolutionView Product
Consumables
Product Product volume
500 mL
Standard Reference Electrode Adapter, 14/20 TaperView Product
General
Product Materials
Polytetrafluoroethylene (PTFE)
Reference Electrodes
Product Reference electrode body diameter
9.5 mm
Replacement Parts & Accessories
Customers may wish to order replacement or additional components of this product. Should you want more details or wish to order an additional part, refer to the list below.
Qty
Product Name / Part #
Price
1
4M Potassium Chloride Reference Electrode Filling Solution
RRSLN0007-500
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1
Standard Reference Electrode Adapter, 14/20 Taper
ACEP1420A3
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Safety Data Sheets (SDS)
For this product, any applicable SDS will be listed here by category. You can view or download the SDS by clicking the appropriate button.
Reference Electrode Filling Solutions
4 M Potassium Chloride (KCl)
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