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Single Junction Mercury Oxide 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.

HAZARDOUS MATERIALS: Additional fees may be applied to cover the costs of shipping the single junction mercury oxide reference electrode.  This electrode also may not be available for sale in all countries.

LEAD TIME: This product carries a standard lead time of 3 weeks from the receipt of payment.

The standard single junction mercury oxide (Hg/HgO) reference electrode is filled with 4.24M KOH solution.  The body of this reference electrode is composed of PTFE, polypropylene (PP), and polyethylene (PE) and contains no glass, making it ideal for use in alkaline electrochemical systems.

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

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# Description Price in USD
Reference Electrode
RREF0038

Single Junction Mercury Oxide (Hg/HgO) Reference Electrode
includes 14/20 PTFE adapter, storage bottle, and contains no glass - ideal for use with alkaline electrochemical systems

Replacement Tip/Frit
RREF0038TIP

Replacement Tip and Frit for Hg/HgO Reference Electrode
threaded polypropylene (PP) tip with polyethylene (PE) frit

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.

HAZARDOUS MATERIALS: Additional fees may be applied to cover the costs of shipping the single junction mercury oxide reference electrode.  This electrode also may not be available for sale in all countries.

LEAD TIME: This product carries a standard lead time of 3 weeks from the receipt of payment.

MERCURY DISCLOSURE: To function properly, this electrode necessarily contains a small amount of mercury.  The maximum amount of mercury in this electrode is 1.8 grams.  See SDS Forms tab for safety information.

Avoid using this reference electrode with the following: acids, cations that will form insoluble hydroxides, and non-aqueous/organic solvents

The standard single junction mercury oxide (Hg/HgO) reference electrode is filled with 4.24M KOH solution.  The body of this reference electrode is composed of PTFE, polypropylene (PP), and polyethylene (PE) and contains no glass, making it ideal for use in alkaline electrochemical systems.

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 PE frit that should be kept wet at all times.  Be advised: the PE frit on the mercury oxide reference electrode has a higher leak rate than a typical ceramic frit found on most other reference electrodes.  It may not be uncommon to notice the fill solution has drained after some time in storage.  Periodic refilling of the fill solution may be required and can be considered part of normal operation and care of this reference electrode.

An extra storage bottle of fill solution is not included with the single junction mercury oxide reference electrode for safety purposes during shipping.  Users may need to prepare their own 4.24M KOH solution for refilling reference electrode.

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.  Additionally, the tip and frit for the single junction mercury oxide reference electrode is a separate threaded part and can be replaced without needing to purchase a whole new electrode.  Should just the frit need replacing, that part may be purchased separately.  See pricing table for part number and details.

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.
Single Junction Mercury Oxide Reference Electrode

Standard Potential

0.098 V vs. NHE

Filling Solution

4.24M KOH

Document # Title

DRP10136

Single Junction Mercury Oxide Reference Electrode Product Information
click here to download (312 KB download)

Material Link

Mercury

click here to download (129 KB download)

Mercury (II) oxide

click here to download (97 KB download)

4.24M KOH

click here to download (221 KB download)

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