The removable sieve columns for the GCE Zen-O Lite portable concentrator contain the sieve filters that separate inert gases from room air and concentrate it into medical-grade oxygen. Replace them yearly to keep the Zen-O Lite producing the correct oxygen concentration.
Designed specifically for the GCE Zen-O Lite portable oxygen concentrator. Not interchangeable with the larger Zen-O or other manufacturers' columns.
2 sieve columns — a complete set for replacing both at once. (Columns work in alternating cycles, so both should be replaced together to maintain proper oxygen output.)
Replace the columns approximately once a year for best results. Your usage environment may shorten the interval — heavily dusty conditions, frequent travel, or running at higher flow settings can all reduce column life.
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.
Call 1-800-775-0942 with your Zen-O Lite details — we'll help 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."