This Nalgene® sterile, 500ml media bottle features a space saving, leak proof, square design and lightweight, shatter-resistance making it well suited for storing and shipping liquid media, buffers and sera. In addition, it has excellent gas barrier properties effectively reducing permeability to carbon dioxide and oxygen. The molded graduations and neck ring allow use with tamper evident shrink sleeves as well as providing a visual indication of approximate volume. Composed of Polyethylene terephthalate (PET), the body is non-pyrogenic and non-cytotoxic in addition to being transparent for clear visibility. The 38-430 natural high-density polyethylene (HDPE) closure enables a durable, tight seal maintaining content integrity. Packaged in shrink-wrap tray modules inside a controlled environment manufacturing area, the tray modules are double poly-bagged inside the master carton for cleanroom applications. Bottle and closure material are Animal Derived Component Free (ADCF) and meet current biological testing standards including USP Class VI, USP 661 and European Pharmacopeia for Abnormal Toxicity. 48/case. Capacity: 500ml. Bottle Material: Polyethylene terephthalate (PET). Closure Material: natural high-density polyethylene (HDPE). Closure Size: 38-430. Serile: Yes. Shape: Square. Compliance: Animal Derived Component Free (ADCF), USP Class VI, USP 661 and European Pharmacopeia for Abnormal Toxicity. Nalgene® #: 342040-0650.