Hello everyone,

I had a question about doing a transfill from a small donor tank.. A 20cf oxygen tank to be exact. I am going to be filling up a IDA-76 which has a capacity of .47 Liters.. How do I calculate how many fills I can do with that tank before I need to top it off? The IDA-76 max pressure is 150 Bar. The 20cf tank I have is roughly 160 Bar. I am not really looking to get a different tank if I dont have to.. I really dont understand all the conversion factors. If anyone could kindly show me? Thanks in advance.

-Matt.