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Mianyang Prochema Commercial Co.,Ltd.&GUS Industry (Hongkong) Co,.limited
Mianyang Prochema Commercial Co.,Ltd.&Gus Industry (Hongkong) Co,.limited Perfect and professional Fluoroproducts for perfect markets Warm and kind service for every buyer Customized and small
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Mianyang Prochema Commercial Co.,Ltd.&GUS Industry (Hongkong) Co,.limited


Brand Name : Prochema

Model Number : FEP

Place of Origin : China

MOQ : 10pcs

Payment Terms : D/A, D/P, T/T, , Western Union, , MoneyGram

Delivery Time : 3-10 days

Packaging Details : plastic bag and carton

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FEP(Fluorinated ethylene propylene) film is the most chemically resistant film in the fluoropolymer family.

Polyfluoro film has superb chemical inertness, ultra low adsorption and ultra low permeation. Polyfluoro film gas sample bags can handle and store various highly corrosive and highly active gaseous and liquid samples. They are widely used in petrochemical industry and environmental protection areas.

Currently there are three types of poly fluoro films that can be used to manufacture gas sample bags. Polyvinyl fluoride (PVF) film has a long history in making gas sample bags. Polyvinylidene fluoride (PVDF) is another type of poly fluoro film. The third type of poly fluoro film is called fluorinated ethylene propylene copolymer (FEP). Both PVF and PVDF films possess excellent chemical inertness, low gas adsorption and low permeation. FEP film has superb chemical inertness, ultra low gas adsorption and low permeability. Only drawback of the FEP film is that the mechanical strength of FEP is little bit lower than that of PVF and PVDF films. It does not have any negative impact on as an excellent gas sample storage material.

Our FEP film used to make gas sample bags is supplied by a renowned world-class manufacturer. company has strict total quality control systems in place to assure that all products are high quality. The designs of fittings are patented; fittings and valves are manufactured with high precision and convenient to use. To avoid cross-contamination, there is no any rubber material to contact with gas sample; and the authenticity and integrity of the sample are protected during storage. In the circumstance of light and strength are the factors to be considered, gas sample bags made from FEP layered with aluminum film are available for better protection from the light (MF series products, special order).


*No contamination of gas sample

*Easily cleaned for re-use by gas flushing

*Very low permeation of gases through the wall of the bags

*Range of inert connectors for ease of use

Standard FEP Gas Sampling Bag

Sizes:0.5L,1L,2L,3L,4L,5L,8L,10L,15L,20L,30L,and 40L or customized size.


Side-opening stopcock valve Side-opening PTFE valve plus PTFE fitting PTFE straight valve plus fitting

It is made of polytetrafluoroethylene (PTFE). The patented design utilizes mouldeling, self-sealing mechanism, no O-ring is inside therefore cross-contamination is eliminated. The PTFE valve can handle gases that there is not corrosive to PTFE. The valve can be used in VOCs analysis.

Operating instructions for FEP bag

1.Avoid filling pressure higher than 1000Pa. Fill gas until the bag is fully expanded, however, it is not so tense when you press it using your finger.

2. A latex or silicon rubber hose should be used to connect to the analytical instrument from the gas sample bag; meanwhile a clamp can be used to control the flow.

3. Gas sample can be released or filled through plastic fitting; Gas sample can be taken by needle from sampling fitting. Vacuum can be done through sampling fitting. You also can open sampling fitting for easy flushing. Plastic fittings and sampling fittings are made of polypropylene.They can handle non-corrosive organic or inorganic gases.

Quality FEP GAS SAMPLING BAG for sale


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