The growth and aseptic transfer of a microbial pre-culture from seed vial to bioreactor is a critical process step in the production of BioPharmaceuticals. The pre-culture step is performed in a biological safety cabinet or laminar flow hood, which adds time and significant cost and to the process. Saint-Gobain Bio-Simplexâ„¢ Single-Use Pre-culture Systems provide a sterile environment for cell culture and aseptic transfer of all fluids in and out of each cell culture vessel.