The aim of the project is the development of methods for the analysis and monitoring of biofilms in cooling lubrication systems of the metalworking industry. Biofilms are the most common form of life of many microorganisms and can occur in various natural or technical environments. Wherever negative effects are apparent, attempts are made to combat them. But controlled biofilms also have positive effects (e.g., useful in drinking or waste water treatment). Both also apply to cooling lubricant systems, but suitable analysis methods are missing as the basis for a necessary control.