PYREX® 250 mL Round Media Storage Bottles, with GL45 PBT Plug Seal High Temperature Cap

These heavy duty 250 mL 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.

Caution: DO NOT tighten caps immediately after autoclaving as the vacuum resulting from cooling can cause breakage.

A wide range of optional caps are available for these bottles:

• Polypropylene colored caps in a choice of orange, green, purple, red, and light gray for ease of sorting and identification
• Vented membrane cap with 0.22 µm PTFE hydrophobic membrane
• PBT caps with silicone septa for syringe sampling or introduction of reagents