This 500mL (16oz) square media bottle without a closure is made of durable, shatter-resistant polyethylene terephthalate copolyester, glycol modified (PETG). The heavy-walled bottle has excellent gas barrier properties, and is specifically designed for packaging and shipping liquid medias, buffers, and sera. The tray-packed bottle without a closure is designed for use in filling lines. It is sterile to a 10-6 sterility assurance level (SAL), and features molded-in graduations. Packaged in shrink-wrapped trays. Closure sold separately. Graduated. Sterile. Shrink-Wrapped Tray Packed. Material: Polyethylene Terephthalate Copolyester, Glycol Modified (PETG). Bottle Style: Media Bottle. Bottle Shape: Square. Neck Style: Narrow Mouth. Closure Material: None. Height With Closure: 177mm. Height Without Closure: 173mm. Outer Diameter: 75 x 75mm. Neck Inner Diameter: 28mm. Neck Finish: 38-430. Capacity: 500mL (16oz). Nalgene® #: 342024-0500.