Abstract: In contrast to the prior art, the essential components of dialyzing liquids are not provided as a dry concentrate or as a genuine solution at the place of dialysis, but as a suspension of undissolved or incompletely dissolved substances, preferably sodium chloride, optionally sodium acetate, in a solution of the remaining components. The suspension is prepared, stored, transported and used in a form designated as an acid cartridge or acetate cartridge, respectively. At the place of dialysis a liquid dialysis concentrate is prepared from the suspension by means of an apparatus, which is here suggested, and can be processed into dialyzing liquid with the existing dosing and safety systems of commercially available dialyzers. The prestage of a dialysis concentrate, which is described in this invention as a suspension, constitutes the supply form with the highest substance density for the components of acid and acetate-containing dialyzing liquids.

Abstract: In contrast to the prior art, the essential components of dialyzing liquids are not provided as a dry concentrate or as a genuine solution at the place of dialysis, but as a suspension of undissolved or incompletely dissolved substances, preferably sodium chloride, optionally sodium acetate, in a solution of the remaining components.

Abstract: The checking apparatus for injection- or infusion-type pumps comprises a glass piston syringe, a linear potentiometer whose spindle is rigidly connected to the piston of the glass piston syringe, a pressure transducer in communication with the syringe inlet, and an electronic computing and evaluating means connected through a water-filled tube to the glass piston syringe and presses water into the glass piston syringe at a predetermined delivery rate. The apparatus displays on three display panels. These important parameters can be measured quickly and precisely with the aid of said apparatus.

Abstract: A method to determine the delivery rate and delivery volume per unit of time of a liquid involves connecting one end of a sealed tube to the outlet of the pump, with the other end being provided with a pressure sensor. The pump is activated to pump liquid in to the tube, and air pressure readings are obtained at time intervals. The measured pressures may be used to determine the delivery rate of the pump. The delivery volume (V) is determined by the formula V=VO.times.A/(A+PO), wherein VO is the total tube volume, A is the measured air pressure, and PO is the absolute air pressure at the test beginning. Volumes not delivered by the pump due to back pressure may be determined by filling the tube with liquid and measuring the increase in liquid pressure per unit of time against the known delivery rate of the pump.

Abstract: Not only the dialysis machine, but also its outer supply conduits and connection tubes together with the associated water distribution system can be flushed and disinfected in the present disinfection method by including these members in the cleaning circuit. Energy is saved and the amount of disinfectants is reduced during hot cleaning and chemical disinfection in a recirculatory process, and the duration of the disinfecting operations can moreover be decreased. Furthermore, a five-valve assembly is provided in or on the dialysis apparatus, in an additional apparatus with respect to the dialysis apparatus or in a water supply system integrated into the wall of a dialysis station for the dialysis apparatus so as to carry out the disinfection method, and a supply means is provided for introducing the disinfectant into the recirculatory circuit.