Size Guide :
Click the button above to view the size chart
Description
xThe removable sieve columns for the Inogen One G4 contain the sieve filters that separate inert gases from room air and concentrate it into medical-grade oxygen. Replace them every 12 to 18 months as a general rule to ensure your machine is producing the correct concentration of oxygen.
Compatibility
Designed specifically for the Inogen One G4 portable oxygen concentrator. Not interchangeable with G5, At Home, or other Inogen models — each unit has differently sized columns.
What's in this pack?
2 sieve columns — a complete set for replacing both columns at once. (Sieve columns work in alternating cycles, so both should be replaced together to maintain proper oxygen output.)
When to replace
Replace the columns every 12 to 18 months as a general rule.
Earlier replacement may be needed depending on operating conditions. Your G4 will alert you with the "O2 Service Soon" error on the display when the columns need attention.
What sieve columns do
Inside an oxygen concentrator, sieve columns are filled with a molecular-sieve material (typically zeolite) that adsorbs nitrogen from compressed room air. What passes through is the concentrated oxygen your machine delivers. Over time, the sieve material loses its capacity to bind nitrogen efficiently — which is why these columns need periodic replacement to maintain the proper oxygen concentration.
Not sure if you need new columns?
Call 1-800-775-0942 with your G4's error code — we'll help you confirm whether columns are the right replacement part.
About Main Clinic Supply
We're based in Rochester, Minnesota — home of the world-famous Mayo Clinic. We deliver free to all Mayo Clinic hospitals and local hotels. With FedEx's strong presence in Rochester, our family-owned business is able to ship late into the evening.
Inspired by Mayo Clinic's values, we prioritize helping people over making profits — embodying Dr. Mayo's 1910 mission statement: "The needs of the patient come first."
- Choosing a selection results in a full page refresh.