THE INFLUENCE OF CARRIER GAS ON THE OUTPUT OF AUTOMATIC PLENUM VAPORIZERS

The effect of the physical characteristics of the carrier gason the output of automatic plenum vaporizers was studied. TheVapor and Fluomatic halothane output at all dial settings washighest with oxygen as the carrier gas, as compared with heliumand nitrous oxide and was a function of carrier gas viscosityat all dial settings. The output of the Fluotec Mark 2 at the0.5 and 1 % settings was highest with nitrous oxide as the carriergas, but at 2, 3 and 4% settings it was highest with oxygen;at the 0.5% and 1% dial settings it was a function of carriergas density, but at 2%, 3% and 4% it was a function of carriergas viscosity.