Abstract: A system for processing cells is provided. The system can include a cell culture container, a fluid handling device, and one or more removable cell processing modules for performing one or more cell processing processes. The one or more removable cell processing modules can include a fluid handling pathway. The one or more removable cell processing modules can be fluidly connected to the cell culture container and the fluid handling device via a receptacle in which the cell processing modules may be inserted. The system can be a closed system.

Abstract: Systems and methods are disclosed for an automatic fluid composition sensor. A fluid composition sensor includes a plurality of detection elements positioned along a length of a sample chamber having a number of material interfaces, the fluid composition sensor detecting location(s) of the interface(s) and/or a composition of one or more of the materials within the chamber. A fluid level sensor generates one or more pulses and measures a time delay between a transmission of the pulses from a source and a reception of the reflected pulses from a gas/oil interface to estimate a position of the oil/gas interface and thus a height of the oil in an oil well.