This machine “filters room air”. And concentrated the oxygen. As long as there is power you can make oxygen.

Oxygen is only dispensed with an order from a physician. So to answer you question, No its not for normal healthy people. It has benefits for cluster headaches with normal healthy adults.

@@DependableOxygenCompany just bought an oxygen concentrator from china, the oxygen purity can be set from 30% to 90%, they told me a normal healthy adult can set the oxygen purity level to 30%-50% just to maintain good health and the sick use 60%-90% for those who's more dependent on oxygen. Do you think it's true?

Gary everything I sell is medical grade. It has to make 90% or higher.

@@DependableOxygenCompany Thank you for your reply. May I know what is the highest purity level available for medical grade? For example highest 98%?99%? Your advice is much appreciated. TQ.

Gary 99.99 Oxygen is the highest you can get out of cylinders or liquid oxygen. Concentrators are 90-96% purity. We use oxygen analyzers to check the purity.