• OEM FEP Tubing for Environmental Sampling

OEM FEP Tubing for Environmental Sampling


High-Quality FEP Tubes: The Ideal Choice for Environmental Gas Sampling

1. Control TPH(C1-C12) outgrassing inside fep teflon tubing

2. Factory equipped with gas chromatography to check outgrassing inside fep tubing

3. FDA 21 CFR 177.1550 FEP tubing

4. ISO 9001:2015 Certificated factory

5. Two factory branches covers 13000 Sqm

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Why choose us as your environmental tubing supplier ?


1. Gas Chromatograph equipped:

Chromatography helps detect VOCs that leach from the fep tubing, which affacts environmental sampling result.

2. Quantify Leachables:

It accurately measures how much of any contaminants are present. Like TPH (C1-C12), below 2ppm.

3. Custom options:

Colors, size, length, stainless steel braided with fittings, fep lined ldpe tubing, pfa tubing

4. Experienced in environmental sampling :

Customers like Samsung, LG, SABIC,Redflow, etc.



  • Environmental Applications of FEP tubings:

    1. Air Quality Monitoring:

    • Ensure accurate sampling of pollutants, volatile organic compounds (VOCs), and other gases in the environment.

    2. Soil and Water Quality Testing:

    • Ideal for extracting gas samples from soil or water, supporting environmental analysis and research.

    3. Laboratory Research:

    • Suitable for laboratory setups, ensuring the accuracy of gas sampling with minimal contamination risk.



fep tubing customers





How do we strictly control the size of FEP tubing ?

Controlling the size of FEP tubing is vital due to strict size tolerances. At Dongguan Suniu Electronics Co.,Ltd, this is done using two main types of instruments: Pin Gauges and the Diameter Laser Measurement Machine. fep tubing size control

1. Pin Gauges are used to measure and inspect the inside diameter of the tubing. The pin gauge designed for the lower limit diameter should fit effortlessly through the tubing's ID, while the upper limit pin gauge should fit loosely.

2. The Diameter Laser Measurement Machine continuously measures and records the diameter and eccentricity of FEP plastic tubing. The device alarms if the size exceeds the default value. With these methods, Suniu Electronics ensures every piece of Teflon FEP tubing adheres to the specified measurements.




FEP Tubing specifications:

Imperial FEP tube sizes(Inner Dia.): 1/16" to 1" (Standard and customized size), wall thickness from 1/64" to 1/8"

Metrial FEP tube size: 2mm to 25mm (Standard and customized size), wall thickness from 0.4mm to 3mm

FEP Tubing tolerance: ±0.05 to ±0.2mm

Package: 50m to 500m/roll

Color: Transparent, red, orange, green, black, etc.

fep tubing catalogue



Key Reasons for FEP Tubing's Preference in Environmental Gas Sampling:


  • Minimal Adsorption:

    • FEP has extremely low surface adsorption.

    • Gases don't adhere to the tubing's inner surface, ensuring accurate sample collection and reducing contamination risks.

  • Broad Chemical Compatibility:

    • It resists a wide array of chemicals and VOCs in environmental sampling.

    • It remains stable without degradation or reaction, suitable for complex chemical environments.

  • Flexibility:

    • FEP tubing is highly flexible, easily maneuverable in various sampling spots.

    • It retains integrity, enabling sampling in confined or hard-to-reach areas.

  • Temperature Stability:

    • It can withstand a wide temperature range, staying stable in diverse environmental conditions.

    • This ensures reliable sampling and sample integrity unaffected by temperature.

  • Low Permeability:

    • FEP has minimal gas permeability, preventing gas diffusion through the walls.

    • This preserves sample purity and integrity, crucial for accurate gas sampling.




Other environment tubing in fep material: