These Optimum Growth™ Flasks provide several options for aseptic sampling in all flask sizes. The five liter flasks has an optional one-way valve in the side of the flask.

The Optimum Growth™ Sampling Flasks come with a 0.2 μm PTFE vented cap for optimum aeration during cultivation. These vented caps create a safe aseptic barrier from harmful contaminants, while the large surface area creates an optimum air exchange for cell growth.

The Multiported Optimum Growth™ Transfer & Feed Flask is completely aseptic, making it the perfect start for the initial seed cultures that seed bioreactors in multiple stages of clinical drug production. Other uses include keeping cell lines alive and other manufacturing functions. These multiported flasks have replaced the need for bags to start seed cultures for the inoculation of bioreactors. The flasks allow for simple use in a shaker and multiple day additions and they replace the current process requiring tube fusing for inoculation.