PFA and FEP tubing benefits for Gas Analyser manufacturers

In gas analysis, accuracy and dependability are paramount. Whether measuring trace contaminants, monitoring emissions or ensuring process control, the integrity of the sampling system directly impacts data accuracy. One critically important component is the tubing used to transport gases from the source to the analyser.

Among the available materials, PFA (Perfluoroalkoxy alkane) and FEP (Fluorinated ethylene propylene) tubing stand out as top choices for gas analyser manufacturers. Here’s why.

1. Exceptional chemical inertness
Gas analysers frequently deal with reactive, corrosive or ultra-pure gases. Both PFA and FEP tubing are fluoropolymers, meaning they exhibit near-universal chemical resistance.

• They do not react with acids, solvents or oxidising gases (aggressive condensate)
• They prevent sample contamination or degradation
• Ideal for trace-level and high-purity gas analysis

This inertness ensures that the composition of the gas sample remains unchanged from source to sensor – which is critical for accurate readings.

2. Ultra-low adsorption and absorption
In gas analysis, even minor interactions between the tubing and the sample can skew results. PFA and FEP tubing offer:

• Low surface energy – reducing adsorption of gases
• Minimal absorption into the tubing wall
• Faster system response times

This is especially important when detecting trace gases or when rapid measurement cycles are required.

3. Smooth inner surface for clean flow
Both PFA and FEP have extremely smooth, non-stick surfaces (smoother than PTFE in comparison), which:

• Reduce particle buildup and contamination
• Minimise pressure drops
• Enable efficient purging and cleaning

For manufacturers, this translates into more stable calibration and less maintenance over time.

4. Wide temperature resistance
Gas analysers often operate in demanding environments. PFA and FEP tubing can handle a broad temperature range of up to 265°C for PFA and 205°C for FEP.

This makes them suitable for both heated sampling lines as well as cold environments (where tubing may run outside of the plant) without compromising performance.

5. Excellent flexibility and durability
Despite their high-performance characteristics, both tubing materials are:

• Flexible and easy to route in compact analyser systems
• Resistant to cracking and stress fatigue
• Long-lasting, even under continuous operation

PFA is slightly more robust at higher temperatures, while FEP offers excellent flexibility and is often more cost-effective.

6. Transparency
PFA and FEP tubing are naturally transparent, allowing:

• Visual inspection of particle contamination and condensate
• Easier troubleshooting during system setup

This can be a practical advantage during manufacturing, testing and maintenance.

7. Commonly used throughout many industries
Both PFA and FEP materials are widely accepted in industries including:

• Environmental monitoring
• Semiconductor manufacturing
• Pharmaceutical processing
• Industrial emissions control

They meet stringent purity and performance requirements, making them a safe and proven choice.

PFA, FEP and PTFE comparison

PFA and FEP tubing provide unmatched chemical resistance, low interaction with gases as well as durability across a wide range of conditions.

By integrating these fluoropolymer tubing solutions into analyser systems, manufacturers can ensure higher accuracy, faster response times and long-term reliability.

Polyflon PFA and FEP Tubing for Gas Analyser manufacturers

If you’re developing or upgrading a gas analyser system, Polyflon’s PFA and FEP tubing is worth serious consideration.

Key benefits of Polyflon’s tubing include:

• Manufactured at our facility in Staffordshire, UK
• Produced using premium-grade PFA and FEP material for consistent, high-quality tubing
• Tubing available in long, continuous lengths, minimising the need for connections, or can be thermoformed into custom shapes for fitment in tight spaces (e.g. inside analyser rack cabinets).

Get in touch with our team on +44 (0)1785 859 054 or enquiries@polyflon.co.uk for a quote or further information.