Reaction Vessel constructed of borosilicate glass to accommodate immersion well. With #50 internal thread at top which accepts a RC50 bushing and Viton O-ring to form a compression seal with the immersion well, one 14/20 joint for sparger tube, one 24/40 vertical joint for condenser and one #7 internal thread side arm for thermometer. Complete with quartz imersion well, caps and O-rings.