Oxygen in the human body should be range from 97%-99% ...unless ur in the movie total recall and its lower hit the nearest ER or doctors.office
Ask your local Walmart store.
If you would like to maintain an oxygen level of 96 to 98% it costs 4 to 6 thousand a year :)
That is something you would have to contact your local Walmart for.
That is a question that should be easily addressed by asking your specific local store
Contact the store directly
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