Consistency from the perspective of an experimental systems approach to the sciences and their epistemic objects

it is generally accepted that the development of the modern sciences is rooted in experiment. yet for a long time, experimentation did not occupy a prominent role, neither in philosophy nor in history of science. with the 'practical turn' in studying the sciences and their history, this has begun to change. this paper is concerned with systems and cultures of experimentation and the consistencies that are generated within such systems and cultures. the first part of the paper exposes the forms of historical and structural coherence that characterize the experimental exploration of epistemic objects. in the second part, a particular experimental culture in the life sciences is briefly described as an example. a survey will be given of what it means and what it takes to analyze biological functions in the test tube.