Metalized-Film Gas Sampling Bags - These are made from a five-layer composite material consisting of nylon/aluminum/polyethylene with adhesive on both sides of the aluminum. The polyethylene contacts the gas sample, for purity and chemical inertness. These bags are recommended for auto emissions and other samples that need storage before analysis. Bags come with two ports: Halkey Roberts valve and polypropylene Septa/Tube fittings.

FEP Sampling Bags - Have an inertness of FEP and are recommended for atmospheric ozone and acid gas collection.

Fluoropolymer Film Sampling Bags - Recommended for collecting organic vapors, such as automotive or plant gas emissions. Fluoropolymer Film have low permeability and can be used for most applications.

* All bags have a 10 bag minimum order.