We produce Petri dishes made from high-quality and transparent polystyrene for the cultivation of microorganisms. Due to their high shape retention, they are perfect for use in automated plate filling systems and are easily stacked. The user has a choice between Petri dishes with and without ventilation cams, a multitude of round Petri dishes with different standard diameters, each as a two-compartment and square version, as well as coloured Petri dishes for clear coding.