A method for outputting a mercury porosimetry pressure-volume curve for a rock sample, comprising: receiving, for the rock sample, mercury porosimetry data for a range of pressures that spans a transition zone defined at least in part by a high-pressure end of a first pressure zone of the range of pressures and a low-pressure end of a second pressure zone of the range of pressures, wherein the mercury porosimetry data of the first pressure zones are obtained using a low pressure chamber and the mercury porosimetry data of the second pressure zones are obtained using a high pressure chamber; characterized by: detecting, within a plot of the mercury porosimetry data, at least one transition artifact made up of a slope bump or a slop break, between the low pressure chamber and the high pressure chamber in the transition zone; computing measurement accuracy boundaries information for the high-pressure end of a first pressure zone and the low-pressure end of a second pressure zone; computing, for the mercury porosimetry data, a pressure-volume adjustment for reducing the slope bump or slope break based at least in part on the measurement accuracy boundaries information; and outputting, for the rock sample, a pressure-volume curve in the transition zone based at least in part on the pressure-volume adjustment. receiving, for the rock sample, mercury porosimetry data for a range of pressures that spans a transition zone defined at least in part by a high-pressure end of a first pressure zone of the range of pressures and a low-pressure end of a second pressure zone of the range of pressures, wherein the mercury porosimetry data of the first pressure zones are obtained using a low pressure chamber and the mercury porosimetry data of the second pressure zones are obtained using a high pressure chamber; characterized by: detecting, within a plot of the mercury porosimetry data, at least one transition artifact made up of a slope bump or a slop break, between the low pressure chamber and the high pressure chamber in the transition zone; computing measurement accuracy boundaries information for the high-pressure end of a first pressure zone and the low-pressure end of a second pressure zone; computing, for the mercury porosimetry data, a pressure-volume adjustment for reducing the slope bump or slope break based at least in part on the measurement accuracy boundaries information; and outputting, for the rock sample, a pressure-volume curve in the transition zone based at least in part on the pressure-volume adjustment. detecting, within a plot of the mercury porosimetry data, at least one transition artifact made up of a slope bump or a slop break, between the low pressure chamber and the high pressure chamber in the transition zone; computing measurement accuracy boundaries information for the high-pressure end of a first pressure zone and the low-pressure end of a second pressure zone; computing, for the mercury porosimetry data, a pressure-volume adjustment for reducing the slope bump or slope break based at least in part on the measurement accuracy boundaries information; and outputting, for the rock sample, a pressure-volume curve in the transition zone based at least in part on the pressure-volume adjustment.