3 weeks in the Alps

From the UK Post Office web site:

Gases, including flammable, non-flammable, toxic and compressed gases
(including flammable, non-flammable, toxic and compressed gases (including new, used and empty gas cylinders, ethane, butane, refills for lighters, fire extinguishers and scuba tanks, life jackets, nitrogen dioxide and carbon dioxide canisters including culinary foaming devices & soda stream).

1. All flammable compressed gases are prohibited* e.g. blowlamps; butane; lighters and refills containing flammable liquid or gas; ethane; gas cylinders for camping stoves; hydrogen; methane and propane.

2. All toxic compressed gases are prohibited* e.g. chlorine; fluorine etc.

3. All non-flammable compressed gases are prohibited* e.g. air bags; scuba tanks, carbon dioxide; fire extinguishers; neon and nitrogen. *includes new, used and empty gas cylinders International – Not allowed in the mail UK – Not allowed in the mail.

*includes new, used and empty gas cylinders

International – Not allowed in the mail
UK – Not allowed in the mail

Maybe Amazon uses a special carrier for gas canisters? I think they would have to.

I do know from personal experience that shops buying boxes of canisters have to use special packing and a special carrier. As far as I know, these are agreed international regulations. YMMV

Cheers