Abstract: A sample is introduced from a bioreactor to a chamber included in a manifold. The chamber includes at least a first probe. The at least the first probe is coupled to a controller. One or more measurements are performed on the sample while the sample is located in the chamber for a measurement period. The sample is returned from the chamber to the bioreactor after the one or more measurements of the sample have been performed.

Abstract: An airlift bioreactor includes a body, a first sparging region, a second sparging region, a first sparger configured to sparge a first gas within the first sparging region, a second sparger configured to sparge a second gas within sparging region, and a controller coupled to the first sparger and the second sparger. The controller is configured to control a first flow rate associated with the first sparger and a second flow rate associated with the second sparger.

Abstract: A system for culturing cells includes a bioreactor including a scaffold on which the cells tend to adhere. The system further includes a circulatory system that intermittently flows fluid over the scaffold.

Abstract: A bioreactor includes a scaffold, a scaffold support, and a manifold. The scaffold is seeded with a plurality of cells. The scaffold has an extended state and a non-extended state. The scaffold support that selectively modifies a state of the scaffold from the non-extended state to the extended state. A manifold is configured to provide a medium to the scaffold. The state of the scaffold from the non-extended state to the extended state is modified at a rate tuned to maintain a cell density associated with the plurality of cells within a particular density range.

Abstract: A bioreactor includes a plurality of spargers and a plurality of vertical circulation loops. A first vertical circulation loop of the plurality of vertical circulation loops includes a first sparging region and a first return region. The first vertical circulation loop is in liquid communication with one or more other loops of the plurality of vertical circulation loops. The first vertical circulation loop is characterized by an individual loop mass transfer coefficient. A controller is coupled to the plurality of spargers and configured to control the plurality of spargers together such that a cumulative mass transfer coefficient of the plurality of vertical circulation loops is within a threshold of the individual loop mass transfer coefficient associated with the first vertical circulation loop.