Fermentation flask for cultivating microorganisms

Chemistry: molecular biology and microbiology – Apparatus – Including measuring or testing

Reexamination Certificate

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Details

C435S288300, C435S297100, C435S286700, C435S304200, C215SDIG005, C215SDIG005, C366S325100

Reexamination Certificate

active

07381559

ABSTRACT:
A container is provided for cell growth by artificial cultivation of selected biological material in a growth liquid for use in an oscillating incubator. The container has a circular bottom with rounded corners joining a sidewall that is inclined at an angle toward a longitudinal axis of the container to define a container volume. The bottom has six equally spaced baffles extending inward from the corners and upward toward a large diameter opening of the container centered on the longitudinal axis. The baffles have a triangular cross-sectional shape with an included angle of about 28–40°, and a height measured parallel to the longitudinal axis of about 15–25% of the usable container volume. The baffles end before the longitudinal axis. The container and baffles are blow molded of a polymer suitable for blow molding. An air permeable filter is placed over the container opening, with the filter having an adhesive on one side to stick to the container. A finger tab on the periphery of the filter helps position and remove the filter.

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