Heat-Seal Bags

Heat seal bags require a sealing machine / heat seal device to close the open end(s). Ideal for crucial specimens and important lab samples, long-term storage, sharp objects (4 mil or thicker), powders (foil) or solutions of formaldehyde, acids, alkalies, greases, oils, and organic solvents (poly). 2-ply structure consists of polyester and polyethylene (PET/PE). These boilable and freezable pouches will sustain temperatures from -56 to 115°C (-70 to 240°F).