IDEX Bottle Caps

IDEX Bottle Caps and Plugs for Reliable Solvent Reservoir Connections

Shop IDEX GL38 and GL45 bottle caps, plugs, filters, and venting accessories for HPLC mobile phase bottles and laboratory fluidic systems.

Idex Bottle Caps

Chrom Tech offers IDEX bottle caps and plugs for laboratories that need simple, dependable connections between solvent reservoirs and analytical fluidic systems. These components are commonly used with mobile phase bottles, solvent supply containers, and fluidic setups where tubing must pass cleanly through a bottle cap while unused ports remain sealed or properly vented.

IDEX bottle cap assemblies are designed with multiple cap insert openings for tubing and luer-style connections. Depending on the configuration, bottle caps support press-fit tubing connections for 1/16" or 1/8" OD tubing, GL38 or GL45 bottle compatibility, and ETFE / polypropylene construction. Bottle cap plugs and filters help close unused ports or provide filtered venting to reduce contamination risk while allowing solvent to be pulled from the bottle without creating vacuum-related flow issues.

Choose the Right IDEX Bottle Cap or Plug

Component Type Description Typical Use
Bottle Cap Assemblies Caps for GL38 or GL45 bottles with press-fit tubing connections and a luer taper connection. Connecting solvent tubing to laboratory bottles used as mobile phase or reagent reservoirs.
Bottle Cap Plugs Plug options for unused luer ports or tubing ports on bottle caps. Sealing unused cap openings to help maintain a cleaner, more controlled reservoir setup.
Bottle Cap Filters Filtered vent options with UHMWPE material and 20µm stainless steel frits. Venting unused ports while helping prevent foreign matter from contaminating the solvent.

Key Features

  • GL38 and GL45 bottle compatibility: select bottle cap assemblies are designed for common laboratory glass bottle thread formats.
  • Press-fit tubing connections: available configurations support 1/16" or 1/8" OD tubing connections.
  • Luer taper connection: bottle cap assemblies include a luer-style connection for compatible plugs or accessories.
  • Port sealing options: plugs are available for unused luer ports or tubing ports to help close unused cap openings.
  • Filtered venting: 20µm stainless steel frit options help keep foreign matter out while allowing the bottle to remain vented to atmosphere.
  • Fluidic materials: IDEX bottle cap assemblies use ETFE and polypropylene materials, while plug and filter options include UHMWPE and stainless steel components.

Tech Tip: Use bottle cap plugs to seal unused ports, and use filtered vent options when the bottle must remain open to atmosphere during solvent withdrawal. Filtered vent plugs are generally not intended for sparging applications.

Applications

IDEX bottle caps and plugs are used in chromatography, analytical instrumentation, and general laboratory fluidic workflows where solvent tubing must be routed from a bottle or reservoir to an instrument. They are useful for mobile phase delivery, reagent transfer, solvent bottle venting, unused-port sealing, and maintaining organized tubing connections in HPLC and related systems.

Key Definitions â–¸
IDEX Bottle Caps
Laboratory bottle cap assemblies designed to provide economical tubing access to solvent reservoirs. They are commonly used with mobile phase bottles and fluidic systems where solvent tubing must pass cleanly through the cap.
Bottle Cap Plug
A plug used to seal an unused luer port or tubing port on a bottle cap. Bottle cap plugs help close extra openings when a cap connection is not being used.
Bottle Cap Filter
A filtered vent option for unused bottle cap ports. IDEX bottle cap filters use a 20µm stainless steel frit to help prevent foreign matter from contaminating the solvent while allowing the bottle to remain open to atmosphere.
Press-Fit Tubing Connection
A bottle cap opening that allows tubing to be pushed through the cap insert. IDEX bottle cap assemblies include press-fit connections for common tubing sizes such as 1/16" OD or 1/8" OD tubing.
Luer Taper Connection
A bottle cap connection designed to accept compatible male luer fittings or tapered plugs. This connection gives users a convenient way to add, seal, or adapt an extra cap opening.
GL38 Bottle Cap
A bottle cap assembly designed for GL38 laboratory bottle threads. GL38 caps are used where solvent reservoirs require a smaller glass bottle thread format than GL45.
GL45 Bottle Cap
A bottle cap assembly designed for GL45 laboratory bottle threads. GL45 is a common bottle format for HPLC mobile phase bottles and general laboratory solvent reservoirs.
Filtered Venting
A reservoir setup that allows air to enter the bottle during solvent withdrawal while helping block particles from entering the solvent. Filtered venting helps prevent vacuum formation when fluid is pulled from the bottle.
Frequently Asked Questions â–¸
What are IDEX bottle caps used for?
IDEX bottle caps are used to route solvent tubing through laboratory bottle caps for fluidic systems. They are commonly used with mobile phase bottles, solvent reservoirs, and HPLC-related liquid handling setups.
What bottle thread formats are available?
IDEX bottle cap assemblies are listed for GL38 and GL45 bottle formats. GL45 is commonly used for standard laboratory solvent bottles, while GL38 supports smaller compatible bottle thread formats.
How many openings are in an IDEX bottle cap insert?
IDEX bottle cap inserts provide three holes. Two holes are used for press-fit tubing, and the third hole accepts a compatible male luer connection or tapered plug, depending on the cap configuration.
What tubing sizes do IDEX bottle caps support?
Listed IDEX bottle cap assemblies support press-fit connections for either 1/16" OD tubing or 1/8" OD tubing. Select the cap configuration that matches the tubing size used in the solvent delivery setup.
What are bottle cap plugs used for?
Bottle cap plugs are used to seal unused openings on bottle caps. IDEX plug options are available for luer ports or for tubing ports used with 1/16" or 1/8" tubing connections.
What does a bottle cap filter do?
A bottle cap filter acts as a filtered vent for an unused cap port. The 20µm stainless steel frit helps prevent foreign matter from contaminating the solvent while allowing air to enter the bottle as fluid is withdrawn.
Why is venting important for solvent reservoirs?
Venting allows air to enter the bottle as solvent is pulled out. This helps prevent vacuum formation, which can interfere with smooth fluid withdrawal from the reservoir.
Can bottle cap filters be used for sparging?
Bottle cap filters are generally not used for sparging applications. They are intended for filtered venting of unused ports while the bottle remains open to atmosphere.
What materials are used in these components?
IDEX bottle cap assemblies are listed with ETFE and polypropylene materials. Bottle cap plugs and filters use UHMWPE, and filtered vent options include a 20µm stainless steel frit.
Should I verify availability before ordering?
Yes. Product status can change, and some IDEX source listings show obsolete product notices. Verify the current Chrom Tech product page, replacement options, or ordering status before selecting a specific part number.