Double-Junction Hg/HgO Reference Electrode, Alkaline

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Double-Junction Hg/HgO Reference Electrode, Alkaline

Double-Junction Hg/HgO Reference Electrode, Alkaline

Product Description
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The Standard Reference for Alkaline Electrochemistry
The FrankLab Double-Junction Hg/HgO Reference Electrode is designed for alkaline electrochemical systems, offering a stable and reliable reference potential in strongly basic electrolytes such as KOH and NaOH. The dual-junction architecture, coupled with a high borosilicate glass body, ensures minimal contamination, reduced ionic crossover, and superior potential stability for long-term electrocatalysis and battery research.
This electrode is widely used in OER, HER, Zn–air/OH⁻ batteries, alkaline fuel cells, and transition-metal catalyst studies.

Key Features

•Optimized for Alkaline Electrolytes

Hg/HgO reference electrodes provide:
•Highly stable potential in 1–6 M KOH
•Low drift under long-duration alkaline operation
•Better reproducibility vs. Ag/AgCl in high-pH media
Typical potential: +0.098 V vs. NHE (in 1 M KOH, 25°C) (Adjustable based on KOH concentration)

• Double-Junction Structure for Reduced Contamination

The intermediate chamber prevents direct contact between the sample electrolyte and internal KOH, offering:
•Minimal ion crossover (especially important for catalytic metals)
•Improved stability in sensitive systems
•Longer electrode lifetime
•Ability to interface with non-KOH alkaline electrolytes
This is crucial for studies involving:
Ni, Co, Fe oxides, perovskites, spinels, layered hydroxides, etc.

• High Borosilicate Glass Body

All FrankLab glass electrodes use premium high borosilicate glass, ensuring:
•Exceptional chemical resistance to strong alkaline electrolytes
•High thermal shock resistance
•Smooth surface minimizing contamination
•Long-term dimensional and structural stability
This is essential for durability in high-pH environments.

• Low Drift, Low Noise, High Reproducibility

•Stable Hg/HgO redox couple
•Ideal for OER/HER kinetic analysis
•Low junction potential
•Reliable baseline for CV / LSV / EIS

Technical Specifications

Parameter Value
Type Double-Junction Hg/HgO Reference Electrode
Reference System Hg/HgO
Internal Electrolyte KOH (various concentrations)
Intermediate Chamber KOH or custom electrolyte
Reference Potential +0.098 V vs. NHE (1 M KOH, 25°C)
Body Material High Borosilicate Glass
Cap Material PTFE
Junction Dual ceramic / PTFE
Length 65–120 mm
Diameter ~6–9 mm
Temperature Range 0–50°C
Storage Solution KOH solution
Lifetime 6–12 months under proper use

Recommended Applications

•HER / OER in alkaline media
•Nickel-, cobalt-, iron-based catalysts
•Zn–air & alkaline battery research
•Alkaline fuel cells & electrolyzers
•Transition-metal hydroxide and oxyhydroxide studies
•KOH-based ORR / redox mechanistic research
The Hg/HgO electrode is considered the gold standard for alkaline electrocatalysis.

Customization Available (Fully Customizable by FrankLab)

FrankLab supports full customization to meet unique experimental setups.

Customizable Options

•Electrode length & body diameter
•Junction type（ceramic / PTFE / ultra-low-leakage）
•KOH concentration inside the electrode（1 M, 3 M, 6 M, custom）
•Intermediate chamber electrolyte（KOH, KNO₃, buffer electrolytes）
•Tip geometry for microcells or thin-layer systems
•Bent or angled electrode design（30°–120°）
•Custom adapters for H-type cells, PEC cells, and flow cells
•Salt-bridge compatibility modules
You will receive a custom design + quotation within 24 hours.

For Custom Orders or Inquiries
If you have custom requirements or any additional questions, feel free to contact us:
Email: support@franklab.shop

Why Choose FrankLab?
FrankLab Focused on electrochemical & research materials
•Stable quality for repeatable experiments
•Flexible customization capability
•Trusted by universities, institutes, and industrial R&D labs

 

FrankLab offers worldwide shipping.Orders are normally shipped from our facility in Hangzhou, China within 1-2 business days after the payment is made. It is very important that the correct shipping address is entered at checkout. We are not responsible for incorrect or undeliverable addresses.

 

Shipping Fees

Orders below USD 499 : Shipping fee of USD 14.90

Orders USD 499 and above: Free worldwide shipping

 

Large Orders & Bulk Discounts

For orders over USD 3,000, please contact our customer support team to check special pricing or potential bulk discounts before placing your order.

IMPORTANT: All goods must be inspected immediately upon delivery. Any shipping damage, missing items, or product defects must be reported to both Franklab team and the shipping carrier within 24 hours of delivery. Failure to report issues within this timeframe may result in your claim being denied. Please retain all original packaging materials, as they may be required for filing a damage claim. 

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For shipping, returns, or bulk order inquiries, please contact:
support@franklab.shop

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