Tedlar® plastic bags

Collection. Procedures commonly used to collect vapor-phase organic compounds include whole-air, cryogenic, adsorption, absorption, and de-rivatization methods. Whole-air sampling involves the capture of an air parcel in a container. Stainless steel canisters or plastic bags constructed from an inert material, such as Teflon or Tedlar, are most commonly used. Each of... 

Grab samples—Devices such as evacuated flasks or plastic bags (saran. Mylar, or tedlar) can be used to collect samples that can be analyzed in the laboratory. 

Figure 13 Gas chromatograms (60 m X 0.25 mm I.D. SPB-1 MS column) depicting the volatiles emitted by different plastic bags. (A) Typical sandwich plastic bag (B) micro-wave roaster bag (C) Tedlar bag.

Modern airships use helium to provide lift. The Hindenburg used hydrogen gas, which provides about twice the lift of helium but is no longer used because it is extremely flammable. The hehum is contained in bags made of a space-age, leakproof fabric called Tedlar, a type of plastic. The bags are loosely inflated so that the helium pressure is about the same as atmospheric pressure. The quantity of helium determines the lifting ability of the ship. 

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