This non-sterile 125mL (4oz) square media bottle is made of durable, shatter-resistant translucent amber polyethylene terephthalate copolyester, glycol modified (PETG) and comes with an opaque amber high-density polyethylene (HDPE) screw closure. It meets USP light-resistant requirements and is ideal for storage and shipping of light sensitive liquid media, buffers, and sera. The heavy-walled bottle provides an excellent gas barrier, with reduced permeability to CO2 and O2. Leakproof bottle features molded-in graduations, with a drip-proof neck finish and molded-in neck ring. Supplied shrink-wrapped into trays, then packed in double PE lined cartons for cleanroom applications. Non-pyrogenic and non-cytotoxic bottle meets current biological testing standards including USP Class VI, USP 661, and European Pharmacopeia for Abnormal Toxicity. Graduated. Non-Sterile. Shrink-Wrapped Tray Packed. Material: Polyethylene Terephthalate Copolyester, Glycol Modified (PETG). Bottle Style: Media Bottle. Bottle Shape: Square. Bottle Color: Translucent Amber. Neck Style: Narrow Mouth. Closure Material: HDPE. Closure Color: Opaque Amber. Height With Closure: 110mm. Height Without Closure: 107mm. Outer Diameter: 54 x 54mm. Neck Inner Diameter: 28mm. Neck Finish: 38-430. Capacity: 125mL (4oz). Nalgene® #: 322021-0125.