H - Electricity – 01 – J
Patent
H - Electricity
01
J
H01J 49/04 (2006.01) G01N 7/14 (2006.01) G01N 33/00 (2006.01) G01N 33/49 (2006.01)
Patent
CA 2112004
A gas investigation apparatus is provided herein to determine the amount of gas in a liquid. The apparatus includes a hollow, longitudinally-extending cylindrical barrel for holding a liquid and a sample liquid with gas dissolved therewithin and with an associated gaseous headspace above. The barrel has a lower inlet and an upper outlet. At least a portion of the barrel is transparent. A plunger is slidably-fitted in a leak-proof manner within the barrel, the plunger being free to slide along the longitudinal length of the barrel, thereby forming a variable volume of air and gas in the headspace. A gas inlet tube has a lower inlet, and an upper outlet within the plunger and extends along the longitudinal axis of the plunger. A longitudinally-extending, heat transfer jacket surrounds the cylindrical barrel for the regulation of the temperature of the liquid sample. An upper valve is connected to the upper outlet of the barrel by means of a zero dead-space, butt-end connection. Selective entry means is provided through the upper valve for admitting a study liquid or tissue suspension into the barrel. A lower valve is connected to the lower inlet of the gas inlet tube by means of a zero dead- space, butt-end connection. An inlet conduit is provided for the selective introduction of test gas, a calibration gas, a carrier gas, or a flushing gas into the gas inlet tube through the lower valve. An inlet tube is provided for the selective introduction of a gas sample into the inlet conduit means through the lower valve. Finally, an exit tube is connected to the upper valve by means of a zero dead-space, butt-end connection, for leading gas exiting from the plunger-position-dependent variable volume of gaseous space at the upper portion of the barrel to a mass spectrometer.
Ledez Kenneth M.
Manson Henry
Snedden Walter
Borden Ladner Gervais Llp
Ledez Kenneth M.
Manson Henry
Snedden Walter
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