Description
This is a replacement Column Pair designed for use in all Portable Oxygen Concentrators..These removable metal columns contain the sieve beds used, to convert normal air into air with high oxygen concentration..Columns Pairs should be changed as needed -- generally every 18-24 months. however in certain operating conditions earlier replacement may be required -- your G5 will let you know when it's time..A Column Pair (Sieve Bed) must always be in place when the is in use..Column Pair (Sieve Beds) for Oxygen Concentrators.