2-Port safety cap deluxe kit, GL45 thread, black outer, ready-to-use with air inlet valve and and ¹/₈" OD tubing adapter. All you need to supply is the ¹/₈" OD tubing and you're ready to work! Create a closed system with GL-45 safety port caps, which seal to a bottle with a secure EPDM O-ring resistant to common HPLC solvents. This cap helps avoid twisted tubing due to its free-spinning collar design. The inner PTFE section will not rotate after the cap is secured. For a closed system, use the adapter with ¹/₈" OD tubing to seal one port and a vent filter in the other to allow for pressure changes and off-gassing.

• Includes plugs for unused ports
• Use ¹/₄-28 adapters to fit ¹/₈ or ¹/₁₆" OD tubing (not included) which can fit through the holes and into the bottom of the bottle
• Fits any GL45 media bottle
• ideal for solvent delivery applications such as HPLC
• prevents evaporation of volatile compounds
• polypropylene outer and PTFE inner
• avoid twisted tubing with free-spinning collar

3-Port solvent delivery port cap kit for GL45 media bottles, red, with plugs, for use with ¹/₈ or ¹/₁₆" OD tubing in ¹/₄-28 adapters. Create a closed system with GL-45 safety caps, which seal to a bottle with a secure EPDM O-ring resistant to common HPLC solvents. All you need to supply is your tubing and the ¹/₄-28 UNF threaded adapters of your choice.

4-Port solvent delivery port cap kit for GL45 media bottles, yellow, with plugs, for use with ¹/₈ or ¹/₁₆" OD tubing in ¹/₄-28 adapters. Create a closed system with GL-45 safety caps, which seal to a bottle with a secure EPDM O-ring resistant to common HPLC solvents. All you need to supply is your tubing and the ¹/₄-28 UNF threaded adapters of your choice. Note: We suggest also using an optional vent filter to allow for pressure changes and off-gassing.