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How It Works

Buying from Oxus

When you buy Refurbished sieve columns from Oxus, you are buying quality product from an FDA Registered, ISO 13485 Certified OEM Manufacturer in business for over 20 years. Our Inogen One G3 Replacement Sieve Columns are FDA Cleared. We can offer you lower pricing based upon your return of the used sieve column “cores” you are replacing. Oxus makes this easy for you by providing free 2-Day shipping to you (shipping available to the US only) and a pre-paid USPS return envelope to return your cores back to Oxus in. Once you have received your order and followed the included Oxus Column Change Procedure to remove your used sieve columns and install your new Oxus Refurbished Sieve Columns, all you have to do is place your used sieve columns and blue service tool back into the box they came in and place into the included USPS return envelope and into your mailbox.

How to Order

Click the “Order Today” button below to order Oxus Refurbished Inogen G3 Replacement sieves.

How to Install

Click the button below to learn how easy it is to remove your old sieve columns and install your new Oxus Refurbished G3 Replacement Sieves.

How to Return your Cores

Oxus makes it easy to save money and protect the environment. Click the “Learn More” button below to view our Return Process.

Need Help? Have Questions?

Contact us for assistance in placing your order or with any product questions.