Mercurous Sulfate Reference Electrode | Product Details

ELECTROCHEMICAL REFERENCE ELECTRODES

Mercurous Sulfate Reference Electrode

A stable reference electrode series for acidic solutions, including Shanghai Chenhua, standard, extended-length, and double-salt-bridge configurations.

Product Overview

The mercurous sulfate reference electrode provides a stable and reproducible reference potential for electrochemical measurement systems, primarily in acidic solutions. Standard, extended-length, and double-salt-bridge configurations are available for different cell spaces and installation depths.

Reference SystemMercurous sulfate reference electrode

Suitable MediumAcidic solution systems

ConfigurationsStandard, extended-length, and double-salt-bridge types

Applications

Cyclic voltammetry, linear sweep, and potentiostatic testing in acidic electrolytes.
Electrochemical corrosion, metal-material, and coating-performance research.
Potential reference in batteries, electrochemical cells, and three-electrode systems.
Double-salt-bridge testing where increased electrode length or reduced sample contamination is required.

For samples that may react with the internal electrode solution or form precipitates, use with a salt bridge is recommended to reduce contamination and blockage risks.

Instructions for Use

Before use, inspect the electrode body, ceramic liquid junction, and internal filling solution.
After filling, place the electrode upright and gently tap it to allow internal bubbles to rise and disappear.
Install the electrode on a fixture or electrode stand, keeping the liquid junction fully immersed in the sample.
During measurement, keep the internal salt bridge solution level higher than the sample level to reduce reverse permeation.
After testing, rinse the exterior with deionized water and prevent sample residues from remaining on the liquid junction.

Maintenance and Safety

Clean the electrode regularly and replace the salt bridge solution promptly to keep the liquid junction open.
For short-term storage, place the electrode in a solution matching the internal filling solution.
For long-term storage, cover the protective cap, store the electrode away from light, and prevent the liquid junction from drying out.
Do not allow the sample to flow back into the electrode and contaminate the filling solution.
Some internal substances may be toxic and salt bridge solutions may be corrosive. Follow laboratory safety procedures.

Frequently Asked Questions

What solutions are suitable for a mercurous sulfate reference electrode?

It is mainly suitable for acidic solutions. For strong acids, complex-ion systems, or precipitation-prone systems, add a salt bridge for isolation and protection.

Why must bubbles be removed before use?

Bubbles may interrupt the internal ion-conduction pathway and cause potential drift, slow response, or unstable measurements.

When should I choose the extended-length type?

Choose an extended-length model for deeper electrochemical cells, lower liquid levels, or installations where the auxiliary and working electrodes must be avoided.

What is the purpose of a double salt bridge?

A double salt bridge extends the reference pathway and reduces direct contact between the internal filling solution and the sample, helping to reduce contamination.

How should the electrode be stored?

Keep the liquid junction moist during short intervals between uses. For long-term storage, cover the protective cap, store the electrode away from light, and check for bubbles and liquid-junction condition before reuse.

Product Overview Instructions for Use Maintenance FAQ

Mercurous Sulfate Reference Electrode ' Specifications and Prices

ELECTROCHEMICAL REFERENCE ELECTRODES

Mercurous Sulfate Reference Electrode

Reference electrode series for acidic solutions, available in Shanghai Chenhua, standard, extended-length, and double-salt-bridge configurations.

Specifications and Price Table

Product Name	Configuration	Size / Configuration	Sale Price (USD)
Mercurous Sulfate Reference Electrode	Shanghai Chenhua Type	Φ6 × 50 mm	$34
	Standard Type	Φ6 × 65 mm	$30
	Extended-Length Type	Φ6 × 100 mm	$38
	Double-Salt-Bridge Type	Internal bridge Φ6 mm, external bridge Φ10 mm	$34

This series is primarily intended for acidic-solution testing. Remove internal bubbles before use; a salt bridge is recommended for complex systems. USD prices are calculated as the CNY price divided by 5 and rounded to the nearest whole dollar.

Purchase Channels

Amazon

Browse standard, extended-length, and double-salt-bridge configurations.

Amazon

eBay

Suitable for laboratory, teaching, and research procurement.

eBay

AliExpress

Contact us for custom lengths, salt bridge structures, and equipment-matching requirements.

AliExpress

Partial references citing our materials (from Google Scholar)

Google Scholar - SCI Materials Hub.jpg

Carbon Dioxide Reduction

1. ACS Nano Strain Relaxation in Metal Alloy Catalysts Steers the Product Selectivity of Electrocatalytic CO₂ Reduction

The bipolar membrane (Fumasep FBM) in this paper was purchased from SCI Materials Hub, which was used in rechargeable Zn-CO₂ battery tests. The authors reported a strain relaxation strategy to determine lattice strains in bimetal MNi alloys (M = Pd, Ag, and Au) and realized an outstanding CO₂-to-CO Faradaic efficiency of 96.6% with outstanding activity and durability toward a Zn-CO₂ battery.

2. Front. Chem. Boosting Electrochemical Carbon Dioxide Reduction on Atomically Dispersed Nickel Catalyst

In this paper, Vulcan XC-72R was purchased from SCI Materials Hub. Vulcan XC 72R carbon is the most common catalyst support used in the anode and cathode electrodes of Polymer Electrolyte Membrane Fuel Cells (PEMFC), Direct Methanol Fuel Cells (DMFC), Alkaline Fuel Cells (AFC), Microbial Fuel Cells (MFC), Phosphoric Acid Fuel Cells (PAFC), and many more!

3. Adv. Mater. Partially Nitrided Ni Nanoclusters Achieve Energy-Efficient Electrocatalytic CO₂ Reduction to CO at Ultralow Overpotential

An AEM membrane (Sustainion X37-50 Grade RT, purchased from SCI Materials Hub) was activated in 1 M KOH for 24 h, washed with ultra-purity water prior to use.

4. Adv. Funct. Mater. Nanoconfined Molecular Catalysts in Integrated Gas Diffusion Electrodes for High-Current-Density CO₂ Electroreduction

In this paper (Supporting Information), an anion exchanged membrane (Fumasep FAB-PK-130 obtained from SCI Materials Hub (www.scimaterials.cn)) was used to separate the catholyte and anolyte chambers.

SCI Materials Hub: we also recommend our Fumasep FAB-PK-75 for the use in a flow cell.

5. Appl. Catal. B Efficient utilization of nickel single atoms for CO₂ electroreduction by constructing 3D interconnected nitrogen-doped carbon tube network

In this paper, the Nafion 117 membrane was obtained from SCI Materials Hub.

6. Vacuum Modulable Cu(0)/Cu(I)/Cu(II) sites of Cu/C catalysts derived from MOF for highly selective CO₂ electroreduction to hydrocarbons

In this paper, Proton exchange membrane (Nafion 117), Nafion D520, and Toray 060 carbon paper were purchased from SCI Materials Hub.

7. National Science Review Confinement of ionomer for electrocatalytic CO2 reduction reaction via efficient mass transfer pathways

An anion exchange membrane (PiperION-A15-HCO3) was obtained from SCI Materials Hub.

8. Catalysis Communications Facilitating CO2 electroreduction to C2H4 through facile regulating {100} & {111} grain boundary of Cu2O

Carbon paper (TGPH060), membrane solution (Nafion D520), and ionic membrane (Nafion N117) were obtained from Wuhu Eryi Material Technology Co., Ltd (a company under SCI Materials Hub).

Batteries

1. J. Mater. Chem. A Blocking polysulfides with a Janus Fe3C/N-CNF@RGO electrode via physiochemical confinement and catalytic conversion for high-performance lithium–sulfur batteries

Graphene oxide (GO) in this paper was obtained from SCI Materials Hub. The authors introduced a Janus Fe3C/N-CNF@RGO electrode consisting of 1D Fe3C decorated N-doped carbon nanofibers (Fe3C/N-CNFs) side and 2D reduced graphene oxide (RGO) side as the free-standing carrier of Li2S6 catholyte to improve the overall electrochemical performance of Li-S batteries.

2. Joule A high-voltage and stable zinc-air battery enabled by dual-hydrophobic-induced proton shuttle shielding

This paper used more than 10 kinds of materials from SCI Materials Hub and the authors gave detailed properity comparsion.

The commercial IEMs of Fumasep FAB-PK-130 and Nafion N117 were obtained from SCI Materials Hub.

Gas diffusion layers of GDL340 (CeTech) and SGL39BC (Sigracet) and Nafion dispersion (Nafion D520) were obtained from SCI Materials Hub.

Zn foil (100 mm thickness) and Zn powder were obtained from the SCI Materials Hub.

Commercial 20% Pt/C, 40% Pt/C and IrO2 catalysts were also obtained from SCI Materials Hub.

3. Journal of Energy Chemistry Vanadium oxide nanospheres encapsulated in N-doped carbon nanofibers with morphology and defect dual-engineering toward advanced aqueous zinc-ion batteries

In this paper, carbon cloth (W0S1011) was obtained from SCI Materials Hub. The flexible carbon cloth matrix guaranteed the stabilization of the electrode and improved the conductivity of the cathode.

4. Energy Storage Materials Defect-abundant commercializable 3D carbon papers for fabricating composite Li anode with high loading and long life

The 3D carbon paper (TGPH060 raw paper) were purchased from SCI Materials Hub.

5. Nanomaterials A Stable Rechargeable Aqueous Zn–Air Battery Enabled by Heterogeneous MoS2 Cathode Catalysts

Nafion D520 (5 wt%), and carbon paper (GDL340) were received from SCI-Materials-Hub.

6. SSRN An Axially Directed Cobalt-Phthalocyanine Covalent Organic Polymer as High-Efficient Bifunctional Catalyst for Zn-Air Battery

Carbon cloth (W0S1011) and other electrochemical consumables required for air cathode were provided by SCI Materials Hub.

Oxygen Reduction Reaction

1. J. Chem. Eng. Superior Efficiency Hydrogen Peroxide Production in Acidic Media through Epoxy Group Adjacent to Co-O/C Active Centers on Carbon Black

In this paper, Vulcan XC 72 carbon black, ion membrane (Nafion N115, 127 μL), Nafion solution (D520, 5 wt%), and carbon paper (AvCarb GDS 2230 and Spectracarb 2050A-1050) were purchased from SCI Materials Hub.

2. Journal of Colloid and Interface Science Gaining insight into the impact of electronic property and interface electrostatic field on ORR kinetics in alloy engineering via theoretical prognostication and experimental validation

The 20 wt% Pt3M (M = Cr, Co, Cu, Pd, Sn, and Ir) were purchased from SCI Materials Hub. This work places emphasis on the kinetics of the ORR concerning Pt3M (M = Cr, Co, Cu, Pd, Sn, and Ir) catalysts, and integrates theoretical prognostication and experimental validation to illuminate the fundamental principles of alloy engineering.

Water Electrolysis

1. International Journal of Hydrogen Energy Gold as an efficient hydrogen isotope separation catalyst in proton exchange membrane water electrolysis

The cathodic catalysts of Pt/C (20 wt%, 2–3 nm) and Au/C (20 wt%, 4–5 nm) were purchased from SCI Materials Hub.

2. Small Science Silver Compositing Boosts Water Electrolysis Activity and Durability of RuO2 in a Proton-Exchange-Membrane Water Electrolyzer

Two fiber felts (0.35 mm thickness, SCI Materials Hub) were used as the porous transport layers at both the cathode and the anode.

3. Advanced Functional Materials Hierarchical Crystalline/Amorphous Heterostructure MoNi/NiMoOx for Electrochemical Hydrogen Evolution with Industry-Level Activity and Stability

Anion-exchange membrane (FAA-3-PK-130) was obtained from SCI Materials Hub website.

Fuel Cells

1. Polymer Sub-two-micron ultrathin proton exchange membrane with reinforced mechanical strength

Gas diffusion electrode (60% Pt/C, Carbon paper) was purchased from SCI Materials Hub.

Characterization

1. Chemical Engineering Journal Electrochemical reconstitution of Prussian blue analogue for coupling furfural electro-oxidation with photo-assisted hydrogen evolution reaction

An Au nanoparticle film was deposited on the total reflecting plane of a single reflection ATR crystal (SCI Materials Hub, Wuhu, China) via sputter coater.