California manufacturer CP Lab Safety has developed its patented ECO Funnels™ to fit a wide variety of standard Nalgene and other brand lab bottles and containers, including carboys, tight head drums, and safety cans. The selection below includes the most common containers used with our ECO Funnel™, we have a funnel that will work within your current waste management system. Nalgene and other laboratory containers with 38mm, 53mm, 70mm and certain other closure sizes will typically work with one of our ECO Funnels™.