And then you can potentially expect to pay twice as much...my local dive shop, whne they went to fill my tank, asked if it was for Scuba or an "Airgun"....when I said its for paintball, they said it will be £10 instead of £5, "because their insurance says so"...so I said,
"Bollox mate, what difference does it make..its still air, you twat..your a ferking rip off merchant!"
So, after phoning a couple of dive schools, I now have a guy 3 mins from my house, who fills 300 bar for £3 and sorts out my testing as well.