Cap, Mobile Phase Delivery System, GL45 threads, blue, PE, for HPLC reservoir bottles. A PTFE insert with 3 holes, PEEK plug and O-ring are included. ARE-Applied Research brand. 1 EA.
Mobile‑phase bottle caps and accessories are used to securely connect solvent reservoirs to HPLC, UHPLC, and LC‑MS systems, supporting reliable and leak‑free solvent delivery. This category includes bottle caps, liners, fittings, ferrules, and related components designed to maintain solvent purity and consistent upstream flow.
Proper mobile‑phase delivery hardware plays a critical role in chromatographic performance. Correct cap and fitting selection helps minimize particulate ingress, reduce solvent evaporation, limit exposure to atmospheric gases, and support stable baseline conditions during analysis.
Cap Design & Material Considerations
Bottle caps in this category are designed for compatibility with standard HPLC mobile‑phase bottles and solvent pickup assemblies. Key design and material attributes include:
Chemically inert liners (such as PTFE‑based materials) to minimize solvent interaction
Secure sealing surfaces to prevent leaks and solvent loss
Controlled venting options to support consistent solvent flow while reducing re‑absorption of atmospheric gases
Caps are intended for use in solvent‑contact environments and are suitable for both aqueous and organic mobile‑phase compositions.
Sterilization & Reusability
Selected mobile‑phase bottle cap assemblies are autoclavable, supporting repeated use and clean solvent handling protocols where sterilization is required. Reusable cap designs help maintain solvent integrity while supporting economical laboratory operation.
Compatible Fittings & Accessories
This category also includes recommended fittings and accessories used in conjunction with mobile‑phase bottle caps, such as:
PEEK or ETFE fittings and ferrules for solvent‑immersed connections
Sealing rings and plugs for secure bottle closure
Pickup and transfer accessories compatible with common chromatography systems
Proper pairing of caps, fittings, and tubing is essential for reliable solvent delivery and long‑term system performance.
Typical Applications
Mobile‑phase bottle caps and accessories are commonly used for:
Connecting solvent reservoirs to HPLC and UHPLC systems
LC‑MS mobile‑phase delivery setups
Buffer and solvent preparation workflows
Analytical and regulated laboratory environments
Selection should consider solvent chemistry, system configuration, and laboratory handling practices.
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