Nitrous Oxide (N2O) has similar properties to Carbon Dioxide in that N2O can be compressed to a liquid and will also yield a large amount of expanded gas for a small cartridge/cylinder size. Nitrous Oxide cartridges (N2O disposable gas-filled cylinders) are well-matched to cryogenic (evaporative cooling) and food applications.

Nitrous Oxide Cylinders have got French blue colour. They are used to Give anaesthesia during operation. It is also called as laughing gas and are availableIn 3 sizes as follows :

• Jumbo size - having capacity of 17000 litres.
• 3744 litres - having capacity of 3744 litres.
• 1851 litres - having capacity of 1851 litres and gets directly attach to boyles machine.