Urine Collection Bag 2000ml. Monitoring Urine output is an important aspect in treating critically ill renal patients. These bags are a polyethylene material. They are transparent on one side and the opposite is white. 2000ml capacity with graduations. Inflow connector is a tapered fitting that connects to a catheter (i.e. Foley) for a secure leak proof fit. Universal double hook: can hang on cage. Needle free sampling port. Anti Reflux drip chamber: minimizes the risk of infection. Additional clip can attach tubing to patients hair or fur. Sterile fluid pathway.