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®FEP Gas Sampling Bag is made of Polyperfluorinated Ethylene Propylene(F46), film thickness is about 0.07 mm(called FEP by DUPONT USA). FEP film is the most chemically resistant film in the fluoropolymer family, low adsorption.The melting temperature of FEP film is 260℃, so the difficulty of sealing for FEP is far greater than PVF(Tedlar) and PVDF(Kynar), our company successfully resolved the problem of difficulty heat seaing for FEP in 2003.
®FEP is one of the most chemically inert materials for making gas sampling bags. It works well in extreme temperatures ranging from –400° to 400°F; allowing it to be used in most stack sampling conditions. 5-mil FEP film is completely resistant to the most severe corrosives. Relatively low permeability results in minimal sample loss. FEP bags can be specified for applications involving rough handling.
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