CEL - Foil Gas Sampling Bags

2-in-1 fittings available in polypropylene New design fully automatic vacuum air sampling box is available to order NOW!, CEL Scientific foil gas sampling bags are made of metalized polyester & polyethylene bonded film, which are suitable for sampling low molecular weight compounds such as carbon monoxide (CO), carbon dioxide (C02) and permanent gases. The foil bags are not recommended for low ppm VOCs due to background levels. All of our stock bags feature an eyelet and polypropylene 2-in-l fitting that combines the valve and septum into one.