GL 45 safety caps seal to the bottle with an O-ring (EPDM) which is resistant to commonly used HPLC solvents. If improved chemical resistance is required (e.g. for halogenated hydrocarbons), order an FEP-coated O-ring separately.

• Built-in stopcocks for easy interruption of solvent lines
• Fit all bottles or canisters with DIN50 thread
• Prevent evaporation of volatile compounds
• Stopcocks rated up to 72 psi gas at 25 °C