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Double Junction Silver Chloride Reference Electrode

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SPECIAL SHIPPING DETAILS: Please note that reference electrodes always ship separately.  Special shipping arrangements may be required to process your order if you purchase a reference electrode.

The standard double junction silver/silver chloride (Ag/AgCl) reference electrode contains two filling solutions: the inner filling solution is 4M KCl with AgCl, while the outer filling solution is composed of 10% KNO3.  Only the outer fill solution comes in contact with electrolyte via the ceramic frit at the bottom, allowing Ag/AgCl to be used while avoiding chloride contamination.  The outer fill solution may also be drained manually and refilled with a different aqueous solution of the user's choice.  The reference electrode fits through the standard 14/20 ground glass joints found on our standard electrochemical cells.  A PTFE sleeve (included) facilitates mounting the reference electrode in the joint.

See "Description" tab below for additional precautions and information.

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# Description Price in USD
Reference Electrode
RREF0024

Double Junction Silver Chloride (Ag/AgCl) Reference Electrode
includes 14/20 PTFE adapter, storage bottle, bottle of outer filling solution

Optional Accessories
RRPG331

Standard Size Reference Electrode Storage Vessel
125 mL flask with 14/20 taper glass joint

reference electrodes sold separately

RRPG097

Fritted Glass Isolation Tube
for additional isolation of the reference electrode from the main test solution

ACEP1420R12

PTFE Mount for Fritted Tube
slides around fritted tube, fits into a 14/20 port

AKTUBE1420

Reference Electrode Salt Bridge Kit
for superior diffusional isolation of the reference electrode from the main test solution

THCLIP

Alligator Clip, fits Banana Plug
slides on to banana cable plug to allow clip connection to pin on end of reference electrode

ACBPCWBB

Shielded Coax Cable, male BNC to Single Banana Plug
for discontinued CBP bipotentiostat, BNC male fits reference connection on front panel of CBP

SPECIAL SHIPPING DETAILS: Please note that reference electrodes always ship separately.  Special shipping arrangements may be required to process your order if you purchase a reference electrode.

Avoid using this reference electrode with the following: NH3 buffers, sulfides, perchlorates, non-aqueous/organic solvents, and alkaline solutions stronger than 0.1M OH

The standard double junction silver/silver chloride (Ag/AgCl) reference electrode contains two filling solutions: the inner filling solution is 4M KCl with AgCl, while the outer filling solution is composed of 10% KNO3.  Only the outer fill solution comes in contact with electrolyte via the ceramic frit at the bottom, allowing Ag/AgCl to be used while avoiding chloride contamination.  The outer fill solution may also be drained manually and refilled with a different aqueous solution of the user’s choice.

The reference electrode fits through the standard 14/20 ground glass joints found on our standard electrochemical cells.  A PTFE sleeve (included) facilitates mounting the reference electrode in the joint.

The junction at the lower end of the reference electrode is a ceramic frit that should be kept wet at all times.  If frit dries out, soak overnight in distilled water.  More information about care, storage, and usage can be found in the product information sheet, which you can download from the Documentation tab.

A small vial containing the outer 10% KNO3 filling solution is included with the double junction Ag/AgCl reference electrode.

View SDS Forms for reference electrodes and electrolyte filling solutions.

Visit our YouTube channel for helpful instructional videos regarding the use and maintenance of this and many other Pine Research products!

All specifications are subject to change without notice.
Double Junction Silver Chloride Reference Electrode

Standard Potential

0.199 V vs. NHE

Inner Filling Solution

4 M KCl with AgCl

Outer Filling Solution

10% KNO3

Document # Title

DRP10026

Double Junction Silver Chloride Reference Electrode Product Information
click here to download (335 KB download)

Material Link

4M KCl with AgCl

click here to download (193 KB download)

10% potassium nitrate

click here to download (204 KB download)

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