Pressure/composition (p-x) behavior was studied by use of a rich-gas condensate with CO2 and nominally equimolar (N2 + CO2) at two temperatures characteristic of gas-condensate reservoirs, 215 and 316-degrees-F. The revaporization of retrograde liquid also was studied at 215-degrees-F; CO2 was found to be more effective than (N2 + CO2) in revaporizing retrograde liquid.