Jacketed reaction vessel to enable cooling of reactant material during photolysis plus the addedfeature of a 2mm bore, 1:5 PTFE stopcock at bottom for draining inner vessel contents. Constructed of borosilicate glass to accommodate the 7874, 7875 or 7876 immersion wells. With one- 14/20 angled joint for sparger tube, one- 24/40 vertical joint for condenser and one-#7 Screw thread side arm for thermometer. Center joint is #50 Screw thread. Bottom of reactor is flat to allow use of stir bar. Volumes indicated are total volumes. Volume in reactive area of lamp is approximately 40-50% of total volume. Size C hose connections. Listing is vessel only.