Pyrex 500mL Round Media Storage Bottles, with GL45 Screw Cap, Ea

These heavy duty 500 mL PYREX round bottles can be used for storage as well as mixing and sampling. They include a linerless, one-piece autoclavable orange polypropylene plug seal GL45 threaded cap with a drip-free pouring ring. New glass bead indicates full capacity line. Bottles have permanent white enamel graduations and marking spots. Caution: DO NOT tighten caps immediately after autoclaving as the vacuum resulting from cooling can cause breakage. Vented membrane cap with 0.22 µm PTFE hydrophobic membrane.