The PET preform is made from virgin high quality polyethylene terephthalate. The preform is used for the subsequent blowing of polymer containers on automatic and semi-automatic blow molding machines. Elfapack preforms have excellent dimensional accuracy, high hardness combined with good impact strength. Jars and bottles made from PET will have optical transparency on par with glass. PET material is resistant to fats, oils, alcohols, acids and alkalis.