Scale up your cell cultures with CellSTACK® by Corning®. As useful alternatives to multiple roller bottles or spinner flasks, these chambers produce an average yield of 6.36 x 107 cells per chamber. Each chamber has 636 cm2 of cell growth area and each stack has two 26 mm diameter filling ports with direct access to chamber bottom. This feature provides greater flexibility for sterile filling and emptying by pouring, pipetting, or via tubing in a fully closed system. The filling ports have standard 33 mm threaded caps, with non-wettable 0.2 µm pore membranes that are sealed directly to the caps to allow gas exchange while minimizing the risk of contamination. Made of sterilized, non-pyrogenic polystyrene with high optical clarity, CellSTACK® comes in 1-, 2, 5-, or 10-chamber formats.