This thread reminds me: I have an expensive portable cryogenic O2 medical unit rented by Apria which I don't need. Anyone interested in experimenting? 1000l capacity, 5.5 lbs empty, 8 hrs of O2 at 2liters/min. I'll put a new battery in it and function test it.
http://www.cairemedical.com/getattachment/cc86f72e-30d5-41dc-beed-79e3f11f4ad8/.aspx Peter
