Abstract: A cell culture system includes an incubator chamber, and a carriage that is removable from the incubator chamber and that carries a plurality of cell culture chambers. Also mounted on the carriage are a manifold structure having supply and return conduits, detachable coupling structure for connecting the cell culture chambers to the manifold structure and pump structure for circulating nutrient material between the manifold structure and the connected cell culture chambers.

Abstract: Equilibrator device for use in determination of the acid-base status, the oxygen dissociation curve of blood and other properties of physiological interest. The device comprises, within a confined and thermostatically controlled environment, a cuvette for accommodating a sample of blood or other liquid to be equilibrated with a gas phase, means for controlledly rotating such cuvette and means for promoting passage of a gaseous flow firstly through a humidifying ambient and then into the presence of said sample.

Abstract: A blood analysis system comprises a tempering chamber in which a plurality of flow through measuring cells are disposed. A sensor electrode is associated with each cell. A sample flow path extends from an entrance port through a heater element, a first measuring cell, a control valve, a second measuring cell, a reference electrode interface, to a positive displacement pump. In standby condition, the entrance port is immersed in flush fluid and operation of the pump in such condition flows flush fluid through the entire sample path. Fluid access to either measuring cell is obtainable through the entrance port, auxiliary valve ports, or disconnectable conduits connected to the valve.

Abstract: A blood analysis system comprises a plurality of flow through measuring chambers, each of which has an associated measuring electrode system for producing an output signal as a function of a parameter of the blood sample in its measuring chamber; and a control device which in a first condition places the measuring chambers in fluid communication with the system inlet and in a second condition isolates the chambers to that the electrode systems may be calibrated concurrently and independently of one another

Abstract: A flush system for electrochemical analysis apparatus comprising a reservoir of flush solution, a flush chamber connected thereto and open at the top, and a sample entrance (probe) arranged for movement between an immersed position in the flush chamber and a sampling position removed from the flush chamber.

Abstract: A replaceable, sterilizable, cell growth assembly comprising a chamber structure of gas permeable, liquid impermeable material having an inner surface to which cells are attachable. The chamber is of tubing configuration and is disposed in a plurality of layers in stacked relation. Spacer structure between the layers of tubing define a plurality of flow passages between the layers and enable a gaseous environment to bathe the majority of the external surface area of the tubing layers. The chamber also includes an inlet conduit for introducing culture media for flow through the plural layers of the chamber structure and an outlet conduit for receiving culture media from the chamber structure, and coupling structure for detachably connecting the inlet conduit to a source of culture media and the outlet conduit to an appropriate culture media receptacle.