Patent No. 5,397,467

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

·         This cap also performs stepwise filtration, sparging/degassing, storage and delivery to the HPLC pump

·         An integral check valve prevents mobile phase from backing up into the gas lines

·         A pressure release valve protects the reservoir from being accidentally over-pressurized

·         The 1/4”-28 fitting connections allow easy connection to any HPLC pump system

·         Cap body is manufactured from glass-filled PTFE

·         Cap will fit any reservoir or bottle with a GL 45 thread