For the first time, composite cements that have been produced by intergrinding can be analyzed and assessed with regard to their inner particle size distribution. For this purpose, two methods have been developed to analyze both the ongoing operation using the factory method and the product requirements by means of a further independent laboratory method. A combination of an air classifier and XRD-Rietveld is provided for the factory method, while a chemical separation process combined with laser granulometry is used as laboratory method.