FEP (fluorinated ethylene propylene) tubing is the all-rounder among fluoropolymers. It combines the excellent chemical resistance of PTFE with the full transparency that is essential for visual control of your fluid flow. IDEX FEP tubing is the standard choice for low-pressure fluid systems where purity and visibility come first.
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Why choose FEP tubing?
FEP is often preferred over PTFE or ETFE because of its specific optical and mechanical properties:
Fully transparent: Unlike milky-white PTFE, FEP is crystal clear. This lets you visually inspect air bubbles, contamination or the presence of liquid immediately.
Extremely chemically inert: Resistant to virtually all chemicals and solvents, so there is no risk of tubing degradation or sample contamination.
Flexible and pliable: FEP is more supple than ETFE or PEEK, making installation in compact instruments easier. This makes it very suitable for complex fluid paths.
Biocompatible: Meets strict requirements for medical and analytical applications, making it safe to use with sensitive biological samples.
Specifications
Pressure range: Up to 2,500-4,000 psi (172-276 bar), depending on wall thickness and inner diameter.
Temperature: -51 to 50°C (for continuous use in fluid systems).
Applications: General laboratory fluid transfer, sampling lines and mobile phase supply for HPLC.