Bent Calomel Reference Electrode, Neutral

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Bent Calomel Reference Electrode, Neutral

Bent Calomel Reference Electrode, Neutral

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Bent Calomel Reference Electrode, Neutral | FrankLab

A Neutral-PH, Bent-Design Calomel Electrode for Specialized Electrochemical Configurations
The FrankLab Bent Calomel Reference Electrode (Neutral) is engineered for electrochemical setups where a straight-body reference electrode cannot be positioned correctly, especially in small-volume cells, H-type cells, thin-layer reactors, or geometries requiring horizontal or angled insertion.
Using the classic Hg/Hg₂Cl₂ calomel system with a neutral KCl electrolyte, this electrode offers a stable reference potential, low drift, and excellent compatibility with a wide range of aqueous systems—without the chloride saturation level of a traditional SCE.

Key Features

• Neutral Electrolyte for Broad Compatibility

Unlike saturated SCE systems, the neutral calomel electrode uses neutral KCl to:
•Reduce chloride activity for sensitive reactions
•Minimize contamination or chloride interference
•Provide a smoother baseline for kinetic and mechanistic studies
Reference potential (approx.): +0.250 V vs. NHE at 25°C (may vary slightly with ionic strength)

• Bent Electrode Geometry (Ergonomic & Space-Efficient)

Custom 90° or angled design enables:
•Easy placement in narrow neck flasks, small electrochemical cells, or two-chamber systems
•Precise junction positioning close to the working electrode
•Avoiding physical interference with working/counter electrodes
•Optimal IR-drop minimization in confined geometries
Ideal for:
•H-type CO₂RR setups
•Thin-layer cells
•PEC reactors
•Compact three-electrode vessels

• Low Drift & High Potential Stability

The calomel redox couple ensures:
•Very stable long-term potential
•Low noise during LSV, CV, and EIS
•Consistent performance for corrosion and dissolution studies

• Chemically Durable Construction

•Glass body for strong chemical resistance
•PTFE cap for long service life
•Porous ceramic/PTFE junction offering stable ionic conduction with minimal leakage

Technical Specifications

Parameter Value
Type Bent Calomel Reference Electrode (Neutral)
Reference System Hg/Hg₂Cl₂
Internal Electrolyte Neutral KCl solution
Reference Potential ~+0.250 V vs. NHE (25°C)
Body Material Glass
Cap Material PTFE
Junction Porous ceramic / PTFE
Electrode Geometry Bent (typically 90°), custom angles available
Length 65–100 mm (model dependent)
Temperature Range 0–50°C
Storage Solution Neutral KCl
Expected Lifetime 6–12 months (laboratory use)

Advantages of Neutral Bent Calomel Design

• Lower chloride activity → Less risk of interfering with metal redox chemistry

Especially useful for:
•Transition metal complexes
•Corrosion/passivation studies
•Metal dissolution kinetic research

• Bent structure improves junction placement

Ensures:
•Accurate potential referencing
•Reduced ohmic drop
•Reduced cross-interference with electrodes

• Mercury-based system → superior long-term stability

Compared with Ag/AgCl, calomel maintains potential more consistently under varying chloride concentrations.

Recommended Applications

•Corrosion/polarization curve studies
•Aqueous electrocatalysis (HER/OER/ORR under neutral or mild conditions)
•CO₂RR H-type cells requiring angled referencing
•Photoelectrochemical cells with limited vertical clearance
•Thin-layer or narrow-chamber electrochemical devices
•Battery electrolyte testing (neutral media)

Usage & Safety Notes

•Temperature ≤ 50°C

Calomel electrodes contain mercury; high temperature reduces stability.

• Not for non-aqueous systems

Use via salt bridge if necessary.

• Keep junction submerged during storage

Prevents junction drying, drift, and slow response.

• Follow laboratory mercury-handling guidelines

Complies with standard research safety requirements.
Custom bend angle, junction type, body length, and connector compatibility available on request. FrankLab supports full customization for advanced R&D environments.

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

 

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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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