Clean a portable oxygen concentrator using a mild dish soap and water, taking care to keep water away from the nasal cannula tubing. The cannula tubing should be replaced every two to four weeks ...
Until this discovery, it was believed that oxygen could not be produced without sunlight Scientists have discovered “dark oxygen” being produced in the deep ocean, apparently by lumps of metal ...
The larger your lung capacity the more oxygen can be breathed in and transported ... You will need a measuring jug, a length of plastic tubing, a big plastic bottle preferably over three litres ...