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Our PVF gas sampling bags are made of 2mil DuPont's Tedlar® film. Tedlar® film is strong, durable, and considered chemically inert to a wide range of compounds. Tedlar gas sampling bags are accredited by regulatory agencies in different countries and widely used indoor air sampling, waste processing yard gas sampling, soil sampling and other environmental protection application. Our TEDLAR sampling bags come with renovated, patented valves. Valve materials are polycarbonate or PTFE.

Depending on inlet orientation, there are two types of valves. One type is that the inlet in vertical to the film; other one is horizontal to the film. Both valves have the same functionalities: it has on/off function; has a cap with septum in it for sampling purpose. Both valves are easy to use. One advantage of horizontal valve(side opening) is to use less storage space.