The Longevity oxygen generators do not produce pure oxygen to use for making ozone eye drops or for ozone rectal treatments. Do not buy a Longevity oxygen generator for these purposes. Buy an oxygen tank and medical grade oxygen.
Longevity doesn’t mention that you will need to buy oxygen for these treatments. They mention how pure the ozone is that is produced by their ozone generator.
While they are very careful not to make any claims about medical grade oxygen in their literature, the literature seems to be very misleading.
Look for manufacturers who fully explain their product before you buy.