Finally, a timesaving device that ends the difficulties of filling and suspending dialysis bags. The dialysis funnel/holder attaches to dialysis tubing with a rubber band and requires a separate tubing clamp or knot for the other end. Just add your fluid, snap the airtight lid closed and begin the experiment. The funnel/holder will accommodate tubing up to 45 mm flat-width and will attach to the rim of any appropriate vessel.