PYREX 500mL Round Media Storage Bottles, with GL45

Corning These heavy duty 250mL PYREX® round bottles can be used for storage as well as mixing and sampling. They include an autoclavable red polybutylene terephthalate (PBT) GL45 threaded cap with PTFE faced silicone liner and ETFE pouring ring for dry heat sterilization (180°C). New glass bead indicates full capacity line. Bottles have permanent white enamel graduations and marking spots. - COG