FEP Tubing for Water Testing, Medical Devices, Semiconductor and Life Sciences

What Is FEP Tubing?

FEP tubing (fluorinated ethylene propylene) is a fluoropolymer tubing material made from a copolymer of tetrafluoroethylene (TFE) and hexafluoropropylene (HFP). Available in transparent and colored options, FEP tubing provides excellent optical clarity for fluid visibility and easy identification.

Originally developed as an alternative to PTFE and silicone tubing, FEP tubing is chemically inert, offers low absorption and low protein binding characteristics, and does not impact pH levels. These properties help it meet the stringent biocompatibility requirements of life sciences, medical, bioprocessing, analytical, and environmental applications.

How Is FEP Tubing Used in Life Sciences, Medical, and Bioprocessing Applications?

Why is FEP tubing ideal for bioprocessing?

FEP tubing's low absorption and chemical resistance help minimize fluid loss while reducing risks to sensitive biologics used in pharmaceutical manufacturing and development.

Chromatography

FEP tubing is frequently used in:

• HPLC systems
• Mass spectrometry and sample preparation
• Chemical analysis equipment
• Solvent and sample lines

Why is FEP tubing ideal for chromatography?

Its broad chemical compatibility helps support analytical accuracy. FEP tubing is one of the best choices for high-performance chromatography systems, particularly for solvent and sample line applications.

Medical Device Fluid Management

Applications include:

• Fluid handling devices
• Catheter assemblies
• Automated laboratory systems
• Drug delivery systems

Cell and Gene Therapy

FEP tubing supports:

• Cell culture fluid transfer
• Closed processing systems
• Critical fluid pathways

Why is FEP tubing ideal for cell and gene therapy?

Its low interaction with fluids, ultra-pure surface, and low protein binding characteristics help maintain fluid integrity throughout processing.

Reagent Handling, Diagnostics, and Microfluidics

FEP tubing is commonly used in:

• Reagent handling
• Sample transfer
• Analytical equipment
• Clinical analyzers
• Diagnostic instruments
• Microfluidic devices
• In vitro diagnostic (IVD) systems

Why is FEP tubing ideal for diagnostics and microfluidics?

Its optical clarity allows users to visually monitor flow while maintaining excellent chemical resistance.

What Are the Benefits of FEP Tubing Compared to Silicone, PFA, and PTFE Tubing?

FEP vs. PTFE Tubing

FEP tubing is often considered the melt-processable version of PTFE (Teflon^™) tubing. While it shares many of the same chemical resistance properties, FEP has a lower maximum operating temperature of approximately 200°C.

A primary advantage of FEP tubing is its ability to be more easily cut, formed, and fabricated while maintaining excellent chemical compatibility.

FEP vs. PFA Tubing

FEP tubing is often selected over PFA tubing because of its:

• Superior optical clarity
• Greater flexibility
• Lower cost
• Ease of forming complex shapes

FEP is especially preferred in laboratory, medical, and environmental applications where visual confirmation of fluid flow is important.

FEP vs. Silicone Tubing

Compared to silicone tubing, FEP offers:

• Resistance to harsh chemicals, acids, bases, and solvents
• Lower fluid absorption
• UV and sunlight resistance
• A smooth, non-stick surface that helps reduce fluid buildup

Its transparency and chemical durability make it an excellent choice for medical, bioprocessing, and environmental applications.

Is FEP Tubing Flexible?

Yes. FEP tubing can be easily cut and formed. Its flexibility, combined with compatibility with push-to-connect fittings, makes installation straightforward across a wide range of fluidic systems.

What Are the Pressure and Temperature Limits of FEP Tubing?

FEP tubing is capable of continuous working pressures up to 3,000 psi (approximately 207 bar) depending on the tubing OD/ID combination.

Please note: Pressure ratings are based on testing with water at room temperature. Actual pressure limits will vary based on fluid type, temperature, connection method, and operating conditions.

FEP tubing can be used in applications up to 50°C, depending on connection parameters. Higher operating temperatures will reduce the tubing's pressure rating.

Is FEP Tubing Suitable for Autoclaving and EtO Sterilization?

Yes. FEP tubing is highly compatible with both autoclave and ethylene oxide (EtO) sterilization methods.

Its heat resistance allows it to withstand repeated autoclave cycles without significant degradation, while its non-porous surface resists moisture absorption. FEP's chemical inertness also helps maintain material integrity during repeated EtO sterilization cycles without significantly affecting tubing clarity or performance.

What Colors Does IDEX Health & Science Offer for FEP Tubing?

Yes. FEP tubing is highly compatible with both autoclave and ethylene oxide (EtO) sterilization methods.

IDEX Health & Science offers FEP tubing in clear and custom color options to support fluid identification, process management, and application-specific requirements. Contact our team to discuss available color configurations and custom extrusion capabilities.