Chicago, i don't think the posters above are getting the design spec and test periods mixed up. We understand the differences.
The design spec before the current EN12245 (pi marked bottles) was HSE-AL-FW2 and FW1 and BS5045 or 5043, depending on the type of bottle.
Because these bottles conformed to the legislation for bottle design at the time they were brought into service, they are STILL legal to use (here in the UK) PROVIDED they are in test. So whether a bottle is legal to 'commercially fill' depends on both design spec AND test periods, not one or the other.
All new bottles put into service here in the UK are now made to design spec EN12245 and are stamped CE and/or Pi to show they conform to this design spec.
What some of us UK ballers are miffed about is that we may have to buy new bottles just for Millennuims, even tho our current bottle design specs are perfectly legal here in the UK.
Basically thats anyone with a bottle older than about 2 years, although they have a 15 year lifespan. I don't know french, german, dutch and spanish legislation but i imagine under TPED it's pretty much the same as ours as TPED sought to bring european standards in line with one another. I'm assuming therefore that french spanish german and dutch ballers are still able to use their pre-pi marked bottles in domestic events so long as they remain in test and within their 15 year lifespan?? (Anyone know this?)
If so, why not for Millenniums??
And on the subject of Design Spec and Testing..Remember the DOT thing a few years back (and still today occasionally) DOT and BS5045 design specs were actually identical yet DOT was not legal to commercially fill in the UK. Why? Because the TESTING process specified for DOT was thought to weaken the bottle structure as the US test to a higher pressure than the UK, causing stress fractures within the bottle wall.
Damn! Why can't lpaintball be simple, like chocolate..plain or milk, no test dates, design specs and easily identifiable at a glance