Filtration cap designed to permit the recirculation of mobile phase back into the reservoir while maintaining the helium sparged environment.

• Performs stepwise filtration, sparging/degassing, storage and delivery to the HPLC pump
• Integral check valve prevents mobile phase from backing up into the gas lines
• Pressure release valve protects the reservoir from being over-pressurized
• 1/4"-28 fitting connections allow easy connection to any HPLC pump system
• Cap body made from glass-filled PTFE fits any reservoir or bottle with a GL 45 thread