Designed by Dr. H.R. Krouse, University of Calgary, for use in H2O18/H2O16 determination. Unique design eliminates the use of grease or breakseals in CO2 recovery. Water samples are introduced by pipet into bulb by removing PTFE plug. After reinstating plug, degassing of water and CO2 is transferred to sample tube 7410. Unit consists of PTFE plug with FETFE O-Ring and glass vessel with 25mL bulb at bottom.