WOW! That's unbelievable research Sir, well doneHi @El Diablo
That was a good idea, some interesting reading. The dive shop can be found at DCP - Dive Center Paradise - ALLES FÜRS TAUCHEN
With some searching, I found that they use a bench testing system made by pressureguard PressureGuard – precision for breathing
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It is a dry test. If one wanted to do it under pressure, it appears you would also need a pressure chamber, perhaps the shop has one. The breath volume is adjustable, default 2,500 ml. The breathing rate is also adjustable, default 25 BPM. It would appear to comply to the European conformance standard if pressurized to 6 atm. I don't know what PCTUV/CE is in the last bullet, perhaps that is a pressure chamber.
Very interesting
Being German, I am sure they follow all regulations to the 'dot' lol
Imagine that they refused to instally Miflex hoses on my Scubapro regs because Scubapro doesn't approve them officially... no big deal but nevertheless worth to be mentioned just to highlight how strict they are.
They are a good store, I found them due to the good reviews online.