Apparently new bottles with a UNISO certification don't have a limited life span so won't have a expiry date, "All First Strike Hero tanks feature UNISO certification. This is the highest standard in paintball and covers both DOT and TC certification. These tanks can be used anywhere in the world and are good for a lifetime. Unlike most DOT/TC tanks that only have a lifespan of 15 years while needing to be hydro tested after every 5, the FS Hero tanks are good for a lifetime. Simply re-hydro after every 5 years and you will never need a new tank again! " taken from just paintball.Also on the bottle you should have a final/expiry date which is by default 15 years after manufacture, eg may 2028
Preferably HPAC as they are the Paintball air specialists and are at many events, so you could drop off with Trevor & pick up at a later eventCool can anyone recommend a good place to get it tested?