Material: PEEK

Colour: Natural/Beige

Maximum Temperature: 260°C/500°F

Flammability: UL94 V-0

• Maximum Pressure: 35Mpa (350 Bar/5075 PSI)

HPLC PEEK Bulkhead Union (for 1/8" OD Tubing) conform to the following Standards/Norms:

The HPLC Bulkhead Union made of PEEK (Polyetheretherketone) is a specialised component designed for 1/8" capillary tubes in High-Performance Liquid Chromatography (HPLC) systems. This unique through-wall fitting allows for a convenient and tool-free connection on either end, providing a secure and leak-free joint between the capillary tube and the HPLC system. 

Thread size: #3/8-24 UNF, #1/4-28 UNF

Thread length: 0.55” (14mm)

Material: PEEK

Features: Choice of fitting / Compatible with flanged tubing.

Choice of fitting:

Compatibility with Different Systems:

Flexible Integration: Different HPLC systems and components may require specific thread sizes. Having a choice of thread sizes ensures that the fitting can be used with a variety of equipment, enhancing compatibility and flexibility.

Manufacturer Specifications: Various manufacturers may have proprietary thread designs. Offering multiple thread sizes allows for seamless integration with equipment from different manufacturers.

Enhanced Usability:

User Convenience: Users can select the appropriate thread size that matches their existing HPLC setup, making the fitting process straightforward and hassle-free.

Reduced Need for Adapters: Multiple thread options reduce or eliminate the need for adapters, which can complicate the setup and introduce potential leak points.

Compatible with flanged tubing:

Enhanced Sealing:

Leak-Free Connections: The flange creates a broader sealing surface, which helps ensure a more secure and leak-free connection, crucial for maintaining the integrity of the HPLC system.

Improved Pressure Resistance: The flange design helps distribute the pressure more evenly, reducing the risk of leaks or failures under high-pressure conditions common in HPLC systems.

Stability and Reliability:

Secure Fit: Flanged tubing is less likely to slip or become dislodged, providing a more stable and reliable connection, which is particularly important for long-term or high-volume analyses.

Consistent Performance: The secure fit provided by the flange helps maintain consistent performance and reproducibility in chromatographic separations.

Manufactured in PEEK:

Chemical Resistance:

Wide Solvent Compatibility: PEEK is highly resistant to a broad range of solvents and chemicals commonly used in HPLC, including acids, bases, and organic solvents. This ensures that the fittings do not degrade or react with the mobile phases, maintaining system integrity.

High Temperature Stability:

Thermal Endurance: PEEK can withstand high temperatures without losing its mechanical properties. This makes it suitable for HPLC systems that operate under elevated temperature conditions, ensuring consistent performance.

Mechanical Strength:

Durability and Toughness: PEEK offers superior mechanical strength and toughness, providing robust and reliable connections that can withstand high pressures typical in HPLC operations.

Low Extractables:

Purity and Accuracy: PEEK has low levels of extractable substances, reducing the risk of contamination. This is critical for maintaining the purity of samples and achieving accurate and reproducible analytical results.

Biocompatibility:

Safe for Biological Samples: PEEK is biocompatible, making it suitable for applications involving biological samples or pharmaceutical analyses where sample integrity and non-reactivity are essential.

Lightweight:

Ease of Handling: PEEK fittings are lightweight yet strong, making them easy to handle and install without compromising durability or performance.

Durability:

Long Service Life: PEEK's resistance to wear, abrasion, and fatigue ensures a long service life for the fittings, reducing the frequency of replacements and maintenance needs.

HPLC PEEK Bulkhead Union applications:

Analytical HPLC Systems:

Connection to Analytical Columns: These fittings are used to securely connect 1/8" OD capillary tubing to analytical HPLC columns, ensuring leak-free operation and precise separations.

Detector Connections: They connect the column effluent to detectors such as UV-Vis, fluorescence, or mass spectrometers, maintaining integrity and preventing leaks in high-sensitivity analyses.

Preparative HPLC Systems:

Scale-Up Processes: In preparative HPLC, PEEK flat head fittings are used to connect larger diameter capillary tubing for scaling up the separation of larger sample volumes, ensuring robust and reliable connections.

Sample Injection Systems:

Autosampler Interfaces: These fittings are utilized to connect autosampler injection ports to the HPLC system, ensuring precise and reproducible sample introduction.

Manual Injector Connections: They provide secure connections for manual injection systems, enabling flexibility in sample introduction methods.

Solvent Delivery Systems:

Mobile Phase Delivery: PEEK flat head fittings are used to connect mobile phase reservoirs to the HPLC pump, ensuring consistent solvent delivery and preventing leaks.

Gradient Systems: In gradient HPLC, they connect different solvent lines to the mixing chamber, maintaining the integrity of gradient formation.

Waste Collection Systems:

Waste Line Connections: These fittings are used to connect waste lines from detectors or other system components to waste containers, ensuring safe and leak-free disposal of used solvents.

Flow Control and Switching Valves:

Multiport Valves: PEEK fittings are used to connect capillary tubing to multiport switching valves, allowing easy switching between different columns or mobile phases during method development.

Flow Splitters: They connect flow splitters to distribute the flow between multiple detectors or columns, maintaining precise flow control.

In-Line Filtration Systems:

Pre-Column Filters: These fittings connect pre-column filters to the HPLC system, protecting the analytical column from particulates and contaminants.

In-Line Filters: Used to connect in-line filters that remove particulates from the mobile phase, ensuring clean and consistent flow to the column.

Biocompatible Applications:

Pharmaceutical Analysis: PEEK fittings are used in biocompatible HPLC systems for analyzing pharmaceutical compounds, ensuring non-reactivity and maintaining sample integrity.

Protein and Peptide Analysis: In biocompatible applications involving proteins and peptides, PEEK fittings provide secure and inert connections to prevent sample degradation.

Environmental Testing:

Trace Analysis: PEEK flat head fittings are used in environmental testing for trace analysis of contaminants, ensuring that the fittings do not introduce any extraneous substances that could interfere with the results.

Water Analysis: They connect capillary tubing in systems used for analyzing water samples for pollutants and other substances, maintaining system integrity and accuracy.

Food and Beverage Testing:

Quality Control: PEEK fittings are used in HPLC systems for the quality control of food and beverage products, ensuring that no contaminants are introduced during the testing process.

Nutrient Analysis: These fittings help in the analysis of vitamins, minerals, and other nutrients in food products, providing reliable connections for accurate results.

The PEEK data sheet is available as a PDF to download below.

Return components within 90 days for a full refund. Please see returns terms and conditions for further information.