Difference in the quality of air between concentrator and liquid O2 tanks?
Do any of you notice a big difference in the quality of air between your concentrator and your liquid O2 tanks?
It is entirely possible that you are sufficiently sensitive to pick up on the difference. After all, the concentrator takes the air around us and 'concentrates' it into a high concentration of oxygen. Liquid oxygen, on the other hand, is pure 100% oxygen.
