Clear pet packer bottles provide a good alcohol and solvent barrier. These clear and transparent bottles make sample identification a snap. pet is stress and impact resistant. Ideal for oil analysis. They feature glass-like clarity and are durable and rigid. They also have exceptional gas and moisture barrier properties and a good alcohol & solvent barrier. Attached pp SturdeeSeal® pe foam lined caps are known for good impact strength, cost effectiveness, and pliability. These polypropylene closures with foamed polyethylene liners have excellent sealing characteristics and offer good chemical resistance including acids, alcohols, alkalis, aqueous products, cosmetics, household oils and solvents.