The ATMI BrightPak liquid containment system has 2 primary components: a 4.6-liter polyethylene terephthalate (PET) bottle and a polyethylene naphthalate (PEN) rigid, 3-dimensional, collapsible interior “liner.” The system dispenses liquids using pressure (direct or indirect) or pump systems; drive gas can be applied between the rigid liner and the bottle to cause the liner to collapse and force out the liquid. The system withstands shipping and storage conditions down to -20°F.
 
Advanced Technology Materials, Inc.; www.atmi.com