The removable columns provide a quick and easy way to service your Inogen G5 or Rove 6 without having to send it in for service. Sold and used as a pair, the columns contain sieve beds that convert the air that we breathe into pure oxygen. Overtime, these sieve beds wear down and need to be replaced. It is recommended to replace the columns every 12-18 months. In certain operating conditions, earlier replacement may be required. The Inogen G5 / Rove 6 will display an alert on the LCD screen when it's time for replacement
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