Electrode, Carbon, Pair Manufacturer,Supplier and Exporter in India

The Electrode, Carbon, Pair (Product Code: SLE/CH/83) is a set of carbon electrodes designed as replacement parts for the Hoffman Electrolysis Apparatus. Each pair comes with insulated lead wires and stoppers, so a laboratory can restore a voltameter whose electrodes have worn or broken without replacing the whole glass assembly. It is used by chemistry teachers and lab assistants maintaining electrolysis apparatus in India and overseas, and is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala.

Specifications

Typical Use

In a Hoffman voltameter the electrodes sit at the bottom of the two side limbs, sealed in by stoppers, while the gases produced collect above them. Carbon is chosen because it conducts well yet does not dissolve in most electrolytes, which makes it well suited to electrolysing salt solutions such as brine, where the chlorine released at the anode would attack many metal electrodes. Students can then measure gas volumes in each limb and relate them to the ions discharged at each electrode.

To fit a new pair, drain and rinse the apparatus, push each stopper firmly into its limb so it seals without leaking, and route the insulated leads to a low-voltage DC supply, noting which electrode is the anode. Carbon anodes slowly wear during long oxygen-producing runs, so keeping a spare pair among your lab equipment spare parts avoids cancelled practicals. After use, rinse the electrodes with distilled water and let them dry before storage.

Manufacturer

These electrodes are made by Jain Scientific Equipments Private Limited, known by its trading name ScienceLab, headquartered in Ambala, Haryana, India. The company supplies complete apparatus as well as the spares that keep it running; see our company profile.

Related Chemistry Lab Equipment

Apparatus and alternatives for electrolysis practicals:

• Hoffman Electrolysis Apparatus — the complete apparatus these electrodes are made for
• Hoffman Voltameter — the glass voltameter used for gas-volume electrolysis
• Electrode Platinum — an inert metal alternative for water electrolysis
• Electrode, Carbon Rod — loose carbon rods for beaker-scale electrolysis
• Power Supply Variable — a DC source to drive the electrolysis

See all items in Chemistry Lab Equipment.

Frequently Asked Questions

What is included in the pair?
Two carbon electrodes together with insulated lead wires and stoppers.

Will these fit my existing Hoffman apparatus?
They are designed as replacement parts for the Hoffman Electrolysis Apparatus. If your apparatus came from another source, send us the limb and stopper size through our contact page so we can check the fit.

Why use carbon instead of metal electrodes?
Carbon is inexpensive and resists attack in many electrolytes, including chloride solutions. Platinum electrodes are the choice when the purest gases are required.

Is a power supply included?
No. Connect the leads to a separate low-voltage DC supply.

How long do carbon electrodes last?
Life depends on the electrolyte, current and running time; the anode wears fastest when oxygen is produced. We recommend keeping a spare pair.

Can spares be ordered in quantity for several labs?
Yes, we supply schools, colleges and distributors across India and international markets. Share quantities and delivery location for a quotation.

Request a Quote

To order replacement carbon electrodes, contact us or add them to your enquiry cart together with any other electrolysis apparatus you need.

Last updated: 24 September 2026