Introduction Culture Flasks are perfect manufacture for cell growth and cell yields aim on little and medium input volume. MS« offers the selection of 4 different growth areas of 12.5, 25, 75 and 182 cm2 which are easy to open packaging, variety of flasks and assortment of caps. 2 different cap styles can be used in both open and closed systems,Plug Sealing Caps :Standard polyethylene caps can be used in closed systems, providing a liquild and gas sheer seal. But if you simply unscrew the cap one quarter of a turn, this cap can also be used in open system ;Vent Caps:Vented polyethylene caps contain a 0.228m hydrophobic filter to allow gas exchange and minimize risk of cross-contamination Feature Flask surface is flat and free from striation to maximize usable growth area innovative angled neck design offer good pipette and cell scraper access in Upper triangular and wider base shape provides stability Both flank sides have engraved graduation Strict leakage tested Certified non-pyrogenic 200/box