Quality features of the cell culture flask: Surface-activated growth area for optimal attachment and best growth of adherent cells Angled neck reduces the risk of medium spilling onto the screw cap Stacking edge enables stable, non-slip stacking of several bottles, including the special bottles Labeling fields on both sides Volume scale on both sides for visual control of the filling volume Crystal clear transparency The opto-mechanically activated growth surface ensures optimal cell adhesion and best cell growth.The non-wettable, hydrophobic PTFE membrane with a pore size of 0.22 µm in the filter screw cap ensures a constant, sterile gas exchange. Growth surface: 25 cm²Volumen max.: 15 mlVolumen empf.: 3–8 mlDimensionen: 92 mm x 51 mm x 29 mm (l x w x h)For more product information, please click here.