The entire oxygenating chamber is water-jacketed to maintain temperature control and uses our Radnoti Quick Disconnect system for easy, secure assembly. The upper chamber is a condenser formed from six linked spheres that provide maximal surface area for re-warming and re-oxygenating the perfusate. Luer entry and exit ports at the top and bottom permit the flow of solution to the heart. An additional five Luer side ports can be used for the entry and exit of oxygen, media overflow, perfusate return (when in the working heart mode), as well as for sampling or adding solutions. The lower end of the chamber has a thermocouple port that permits monitoring of perfusate temperature as well as a port for insertion of a pH probe to monitor perfusate pH. Constructed of borosilicate glass.