This report describes the specification of a suitable measurement system for the qualitative and quantitative assessment of fluids with a high carbon dioxide content, as is typical for ⁠CCS⁠ systems. The use of continuous ⁠CO2⁠ measurement equipment in industrial plant is possible. The measurement method used works reliably with the established quality assurance measures. Compliance with the highest tier in accordance with the ⁠Monitoring⁠ and Reporting Regulations is not possible. The uncertainty must be determined individually for the respective measurement equipment and optimised, if applicable. There are no test results for flow meters which can be used with compressed waste gas. By comparison with the measurement methods used for atmospheric measurements, a large error contribution is to be expected due to this. Further investigations and development by equipment manufacturers are required.