ThereISlifeafterQF, if you have a regular requirement to carry compliant CO2 cartridges e.g.
no larger than 28g or 50ml in a lifejacket or for bike tyre inflation, with a max of 4, contact QF DGs (
[email protected]) and request a Letter of Approval. It's free and can be used at check in, for all QF and Jetstar flights, validity until 31/12/14 atm but when updated will go for another 2 years. I'm no longer at QF, but trust me they will go out of their way to help you