This Corning cell culture flask with an angled neck is manufactured from optically clear virgin polystyrene. It has a phenolic-style black high density polyethylene cap, and is TC-treated for optimal cell attachment. It has a 175sq cm available cell growth area with a recommended medium volume of 35 to 52.5mL and a maximum working volume of 250mL. It is 100% integrity tested and printed with lot numbers for ease in traceability. Sterilized by gamma irradiation and certified nonpyrogenic. Not bar coded. Graduated. Sterile. Material: Polystyrene. Cell Growth Area: 175sq cm. Flask Shape: Rectangular. Neck Style: Canted. Surface Treatment: TC-treated. Cap Style: Phenolic Style. Cap Material: High Density Polyethylene. Cap Color: Black. Recommended Medium Volume: 35 to 52.5mL. Maximum Working Volume: 250mL. Corning #: 431085.