Water Electrolysis Apparatus (Hoffman Voltameter) Manufacturer,Supplier and Exporter in India

Water Electrolysis Apparatus (Hoffman Voltameter) (Product Code: SCI-552/03) is a glass electrolysis cell used to split water into hydrogen and oxygen and compare their volumes in school and college chemistry laboratories. It has three glass tubes, two of them graduated 25 ml tubes with tempered glass taps, and stands 600–650 mm tall, making it a classic piece of electrolysis apparatus for demonstrations. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.

Specifications

What Is the Hoffman Voltameter Used For?

The Hoffman voltameter shows that water can be decomposed into its elements by an electric current. The tubes are filled through the reservoir with water made conductive by a little electrolyte; when a low-voltage DC supply is connected through the conductor wires, hydrogen collects above the cathode and oxygen above the anode. The graduated tubes let students read that about twice as much hydrogen forms as oxygen, which supports the formula H₂O.

Opening each glass tap releases a gas for simple identification tests: hydrogen burns with a squeaky pop, and oxygen relights a glowing splint. The apparatus also introduces the language of electrochemistry — anode, cathode, electrolyte — and Faraday’s laws. Clamp it securely in a stand, use eye protection and test only small amounts of gas at a time.

What to Specify When Ordering

• Electrodes: the product data lists carbon and platinum carbon electrodes, so state which you need.
• The number of apparatus required for demonstration benches or student groups.
• Whether a stand, clamps and a DC power supply should be quoted too, as they are not listed with the apparatus.
• Any spare tubes, taps or conductor wires you want to hold in stock.

OEM Manufacturer

Jain Scientific Equipments Private Limited, trading as ScienceLab, is the OEM (original equipment manufacturer) of the Water Electrolysis Apparatus (Hoffman Voltameter) and makes it at its own licensed factory at Saha, Ambala, Haryana, India. Because the maker supplies it directly, questions about replacement glass tubes, taps or electrodes go straight to the manufacturer — ask us about spares for your apparatus. See the ScienceLab company profile.

Related Laboratory Equipment

Items used with the voltameter or in the same chemistry sequence:

• Water Synthesis Apparatus (Eudiometer) — demonstrates the reverse reaction, forming water from hydrogen and oxygen.
• Retort Stand — holds the tall glass assembly steady during electrolysis.
• Universal Power Supply or Power — a bench power source option; confirm output suitability with us.
• Electrode Platinum — platinum electrodes for electrolysis work.
• Hoffman Electrolysis Apparatus — an alternative Hoffman model in the electricity range.

Browse Laboratory Equipment and Chemistry Lab Equipment for more apparatus.

Frequently Asked Questions

What are the main specifications of the Water Electrolysis Apparatus (Hoffman Voltameter)?
The Water Electrolysis Apparatus (Hoffman Voltameter) has three glass tubes — two graduated 25 ml tubes with 1 mm scaling and one reservoir tube — plus carbon and platinum carbon electrodes, tempered glass taps and conductor wires. It stands 600–650 mm high.

Why does the Hoffman voltameter have two graduated tubes?
The two graduated tubes of the Hoffman voltameter collect hydrogen and oxygen separately, one above each electrode, so students can read both volumes and see that roughly twice as much hydrogen as oxygen is produced when water is electrolysed.

Is a power supply included with the Water Electrolysis Apparatus (Hoffman Voltameter)?
A power supply is not listed with the Water Electrolysis Apparatus (Hoffman Voltameter). It needs a low-voltage DC source connected through its conductor wires; ask us to quote a suitable supply and stand with the apparatus.

What liquid is used in the Hoffman voltameter?
The Hoffman voltameter is filled with water containing a small amount of electrolyte, such as a dilute acid or salt solution, because pure water conducts electricity poorly. Follow your laboratory’s safety procedures when preparing and handling the solution.

Is a calibration certificate available for the graduated tubes?
A calibration certificate for the graduated tubes of the Water Electrolysis Apparatus (Hoffman Voltameter) is not mentioned in our product data. If your laboratory needs one, discuss the requirement with us through the ScienceLab contact page before ordering.

Who manufactures the Water Electrolysis Apparatus (Hoffman Voltameter)?
The Water Electrolysis Apparatus (Hoffman Voltameter) is manufactured by ScienceLab (Jain Scientific Equipments Pvt Ltd), the OEM, at its own licensed factory in Saha, Ambala, Haryana, India, and supplied factory-direct in India and international markets.

Can spare parts for the Hoffman voltameter be ordered?
You can ask the manufacturer directly about replacement tubes, taps, electrodes or wires for the Water Electrolysis Apparatus (Hoffman Voltameter). Tell us which part you need and how many, and availability will be confirmed with your quotation.

Request a Quote

For the Water Electrolysis Apparatus (Hoffman Voltameter), send your quantity and electrode choice through the contact page or add it to the enquiry cart. Quotations come direct from the manufacturer.

Last updated: 24 September 2026