Patent No. 5,397,467.

·         This cap combines the mobile phase filtration, sparging/degassing, storage and delivery functions

·         All tubing connections are made in the back of the cap, reducing the typical clutter of tubing at the reservoirs

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

·         A pressure release valve prevents 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