Story New Kuhner AerationSystem for cell cultivations The combination of FlowCon and AerationSystem from Kuhner enables the user to run shake flasks cultivations in in non-humidified and non-CO2-controlled incubator shakers The combination of FlowCon and AerationSystem from Kuhner enables the user to run shake flasks cultivations in in non-humidified and non-CO2-controlled incubator shakers. The FlowCon provides a precise gas composition and flow rate. Simultaneously, the AerationSystem (consisting of GasDivider and AerationCaps) humidifies and distributes the gas flow evenly to the connected shake flasks, preventing high evaporation losses and stabilizes the pH of the media. By controlling the chemical composition of the inlet air with the FlowCon, it is not only possible to supplement CO2 but also to reduce the concentration of oxygen (O2) or even implement hypoxic conditions using nitrogen (N2)*. This control of gas compositions allows for a variety of different applications, including stem cell processes that require physiological oxygen concentration at 5 % O2 or anaerobic cultivations in a nitrogen atmosphere.