These crystal-clear polystyrene flasks are treated with vacuum gas plasma which makes them ideal for growing cells that require an adherent surface.
The cap features a .22um membrane for ample gas exchange and may be tightened to prevent leaking without the concern of starving the cells.
The mouth of each flasks is large and the cant of the neck is designed to make it easy to insert a cell scraper and remove the "cell grass" from the flask surface.