Abstract: The present invention includes a method and apparatus for the testing the integrity of a dialyzer prior to use. The dialyzer is tested on the same hardware used for the treatment of dialysis. The dialysate and blood sides of the dialyzer are primed in the normal manner. The blood and saline lines are clamped while the venous line is vented to the atmosphere. The ultrafiltrate flow rate is increased until the blood side fluid is ultrafiltered. The dialysate side is monitored for pressure increases. If the pressure does not increase, the test fails.

Abstract: This invention relates to an apparatus for dosed, continuous and simultaneous infusion operations. To prevent an uncontrolled flow through the conveying conduits, which can above all occur during the installation of a flexible tube into or its removal from a peristaltic pump due to the action of gravity, the invention provides a valve (5, 6) which is positioned in the conveying conduit of the peristaltic pump and operatively connected to a door detector of the pump in such a way that the valve is closed when the door is opened, and opened when the door is closed.