Fiscal metering could face several challenges during CO2 transport by pipelines due to the unusual physical properties of CO2 and CO2 mixtures. Coriolis flowmeters are an options to measure CO2 accurately in transport pipelines. However, the presence of impurities can affect the performance of the flowmeter. Therefore, the performance of a Coriolis flowmeter was evaluated using CO2 fluid with impurities in a mass flow-rig designed based on the gravimetric calibration in start / stop operations. In each test, the mass recorded by the Coriolis flowmeter was compared to the mass collected in the receiving facilities and measured using high accurate balance in order to obtain the relative deviation of the test. During the tests, in addition to the mass and volume flow rate, the operational pressure and temperature as well as velocity and density were recorded. The series of tests were conducted using different fluids, including: pure N2 (validation tests), pure CO2 (reference tests), pre-combustion mixture, post-combustion mixture, Oxyfuel-I mixture and Oxyfuel-II mixture. The recorded data as well as recorded and measured masses are available in the provided excel files for each investigated fluid. Grant number: UKCCSRC-C2-201