Compression Ignitor (Pneumatic)

Product Code : LSK-CL-10052

Compression Ignitor (Pneumatic) (SKU LSK-CL-10052), also known as a fire syringe or fire piston, shows that a gas heats up when it is compressed quickly. A plunger is driven sharply into a heavy-walled tube, and a wisp of cotton at the bottom ignites in a flash. Physics and chemistry teachers use it for lessons on gases, energy and diesel-engine ignition. Science Lab Supplies ships it from Ambala, India to schools, colleges, training institutes, tender contractors and distributors.

Specifications

A piston runs inside a heavy-walled combustion tube, and that tube is housed within a transparent plastic outer cylinder. The clear outer cylinder gives an unobstructed view of the flash inside while enclosing the working tube during the demonstration.

Applications and Experiments for the Compression Ignitor

The fire syringe demonstrates adiabatic compression: the work done by the plunger raises the temperature of the trapped air so fast that it passes the ignition point of cotton before heat can escape. It links the gas laws and the first law of thermodynamics to real engines.

• Class 11 physics: thermodynamics and adiabatic processes.
• Class 11 chemistry: behaviour of gases and energy changes.
• Diploma and ITI mechanical trades: principle of compression ignition in diesel engines.
• B.Sc. heat and thermodynamics: qualitative demonstration of work turning into internal energy.

The demonstration produces a real flame inside the tube. Use only a tiny piece of cotton, keep the device pointed away from people, check the tube for cracks before use, and operate it only under teacher supervision.

Standard Scope of Supply

The Compression Ignitor (Pneumatic) is supplied as a single unit made up of the piston, the heavy-walled combustion tube and the transparent outer cylinder, as described above. Cotton wool for the demonstration is provided by the user.

Packing, MOQ and Lead Time

Quotations can cover one demonstration unit or a quantity for several labs. Each quotation gives packing, delivery time and price for that order, and gas-law apparatus or other school chemistry lab equipment in India can be added.

Having an Importer-Exporter Code means Science Lab Supplies can ship to buyers in Egypt, Iraq, Nigeria, Kenya, Ghana and Ethiopia. Science Lab Supplies is registered for GST (GSTIN 06ADEPJ0574F2ZU). Get in touch through the contact page, add items to the enquiry cart, or open the lab tender page for tender enquiries.

Frequently Asked Questions

How does the fire syringe light cotton without a flame?
Pushing the plunger in quickly compresses the air so fast that its temperature rises above the ignition point of cotton, which flashes alight inside the tube.

Why is there a transparent outer cylinder?
It houses the heavy-walled combustion tube and gives the class a clear, unobstructed view of the flash while the piston is pressed.

Who supplies the Compression Ignitor (Pneumatic)?
Science Lab Supplies supplies this demonstrator from Ambala, India, alongside gas-law and thermodynamics apparatus for schools and colleges.

Is this apparatus suitable for student use?
It is intended mainly as a teacher demonstration or by older students under close supervision, because it produces a flame and relies on a sharp push of the plunger.

Related Gas Laws and Thermodynamics Apparatus

The compression ignitor fits into a sequence of gas lessons. These four items cover pressure–volume and temperature relationships and the molecular picture behind them, and can be quoted together.

• Apparatus Boyles Law Pressure Type — pressure and volume at constant temperature.
• Apparatus Charle's Law — gas volume and temperature.
• Manometer Cylinder with Piston Temperature Meter — piston, pressure and temperature together.
• Kinetic Theory Model — molecular motion behind gas behaviour.

Browse the full Chemistry Lab range or all school lab equipment.

Last updated: 25 September 2026