Are you guys all passing a trans-continental reefer around between yourselves?
Should you be unable to obtain the air of the correct country of origin, you might be able to use 'tyre gas', which is what a well-heeled acquaintance of mine found listed on his bill at the Porsche Zentrum to the tune of a couple of hundred smackeroonies, without him having asked for his tyres to be inflated with the stuff! When he explained that he was acustomed to matching his tyre pressure to racetrack conditions of a rack day weekend, they were happy to supply him with a pressurised flask of said 'Reifengas' at an additional further cost. Talk about taking the mickey. He told 'em to rebottle the stuff and refill his already-expensive-enough Michelin Pilot Sport tyres with whatever air we breathe here in Berlin, and knock it off his bill to boot. Sorry for veering off topic, and for being unable to help you locate any of the exact variety of air you seek. Keep us posted, eh!