Corning® Pyrex® Three-Hole Mobile Phase Delivery Screw Cap
By Corning
The three holes have 1/4"-28 threads in the top with 1/8" holes for 1/8" OD polytetrafluoroethylene (PTFE) tubing. The body is glass filled PTFE. Polyethylene teraphthalate (PET) screw cap has a GL-45 thread. The cap includes three 1/4"-28 ethylene tetrafluoroethylene (ETFE) plugs and a fluorocarbon O-ring for sealing to the reservoir. Integral pressure relief valve relieves reservoir pressure at 10 psi.