Abstract: A fluid collection vessel includes a catch portion that is configured to attach to an endoscope adjacent the port. The catch portion directs any leaked fluids the come out of the port into a neck portion that leads to a collection chamber. The catch portion includes an indented portion that is shaped and sized in correspondence with the neck and body of the endoscope so as to locate the port over the approximate center of the opening of the catch portion. The neck portion is an elongated component having a relatively narrow cross section that tends to inhibit spillage in the event of the collection vessel falling or being laid on its side.