Hyman Fire Piston

29.59 each

 4 reviews

A set to demonstrate the rise in temperature when a fixed mass of gas is compressed

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Hyman Fire Piston
Product Code: 0107 In stock
1-9
10-99
100+
£29.59 each
£26.63 each
£23.67 each
The Hyman Fire Piston demonstrates the rise in temperature when a fixed mass of gas is compressed.

A portion of tinder supported inside a transparent cylinder is ignited when the contained air is compressed by a hand operated piston



Suitable tinder is provided, though almost any organic material will do if dry enough, i.e. cotton, charcoal, tissue paper.

You can also demonstrate the need for oxygen to support combustion by attempting to re-ignite a piece of tinder. It will only occur if the piston is completely removed from the cylinder and a supply of fresh air introduced.

A cloud can be formed in the cylinder by, having compressed the air inside it, allowing a sudden decompression. The reduction in pressure lowers the temperature and immediately condenses the water vapour inside the cylinder. This can be seen quite easily, but is often mistaken for smoke given the combustion that has already taken place.

Suitable from Key Stage 4 (GCSE) to university levels of education.

Hyman Fire Piston

 ComponentQuantityOrder Code
 Hyman Base and Piston1 
 Hyman V3 cylinder 198mm1 
 Hyman Cotton wool1 
 Hyman Tissue1 
 Instructions for use1 

Customer reviews shown below. Leave a review

Product quality:

Service and delivery:

Age of user: 18+

Hyman Fire Piston

Submitted by: Marvin Sueszer (03/09/2021)

As an expert in chemistry didactics I am happy with the product, BUT the vial with vaseline was broken! The whole package was soaked in oil and full of shards, the wood is permanently stained and I needed to clean up a whole mess :( in addition I need to purchase new lubricant because the device doesnt work without it! Thats really unfortunate and I was so close sending it back... But due to additional costs (Im in Germany) I am hesitating... And need to make the best out of it

Response from Cochranes: Hi Marvin, We're really sorry to hear that the vial of lubricant arrived broken. We have contacted you privately to help as we always want to put right any damages that have occurred in transport we've organised even if you are overseas. Yours, Tom Cochrane.

Verified purchase


Product quality:

Service and delivery:

Age of user: 18+

Hyman Fire Piston

Submitted by: Mr Nigel Tovey (14/05/2018)

The service from Cochrane's was very good and the Hyman Fire Piston has been an excellent addition to my fire safety training sessions.

Verified purchase


Product quality:

Service and delivery:

Hyman Fire Piston

Submitted by: Chris B (13/09/2011)

Brilliant! Solidly constructed. A generous amount of treated tinder. Clear instructions.


Product quality:

Service and delivery:

Hyman Fire Piston

Submitted by: N Roberts (19/05/2011)

Very impressive. Works like a charm. My only problem is that twice I've cracked the plastic cylinder. This is probably caused by pushing the piston down at an angle. Replacement cylinders would be an advantage. Manufacturers note: Thank you for your review. Replacement cylinders are available if required. Please contact us for details. Please note the cylinders should not crack if pushed straight down, please try to avoid pushing at an angle. MANUFACTURER'S UPDATE (February 2015): Following this, in 2014 we also changed the cylinder to a stronger material and have had no reports of the new cylinder cracking :)


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