Too often KORR customers lament, “I feel so guilty throwing away those bulky MetaBreathers!” The truth is, the tubing portion of MetaBreathers is made of a high-density polyethylene. That is the same substance as plastic milk cartons. So if your community recycles milk cartons…you guessed it! MetaBreather tubes can be recycled! And if your community doesn’t recycle, contact KORR and we will send you a mailing label to return your used MetaBreathers to us for recycling. We can work together to provide clean test equipment for our patients AND a clean environment for our children!