Hi, I hope someone will be able to give me some advise on the following. My dad has been diagnosed with pulmonary fibrosis and is getting gradually worse over the last 5 years. However, he is still wanting to take part in family activities and is sad that this is increasingly getting more difficult. He uses a combination of liquid oxygen from a tank and a concentrator at times. The problem is I am from Germany and live here in the uk with my family. When my parents come to visit us they travel by car now with a tank in the back to be used. This however only lasts for 4-5 days and there is always the stress and anxiety that he might run out before or during the travel back. I have been inquiring about the possibility of refilling the tank with the help air products - but have been told that it is not possible to refill the tank due to different adapter parts in the UK and in Germany. To the naked eye the tanks look exactely the same but apparently it would not work. The easiest would be if we were able top up whilst here and all the worry would be gone. I am very keen for him to continue to travel and especially seeing my son (now 5) growing up here as well as in Germany. He has a good set up in Germany and I fear he will abstain from travelling if this is getting worse and more so that also my mum will decide not to come as he is not able to. I used to order oxygen cylinder in the past - which I can do again, but they will get him through the time and still leave the issue of an empty tank for the travel back. I cannot imagine the anxieties he has and would not suggest anything. If anybody knows where there are possibilities to either refill German liquid oxygen tanks or another solution how one could tackle the problem - I would be very grateful. We live in the Manchester area and I know the refill station from air product is in Trafford park - but I have had no luck so far.many thanks.