PET = Polyethylene Terephthalate; the combining of two Monomers, Modified Ethylene Glycol + Purified Terephthalic Acid. Better still, these inexpensive reusable, food grade plastic bottles with screw caps are ideal for alcohol and solvents as well as other soft drinks. Please label the bottles! . . . . It’s just the thought of pouring your favourite tipple from a bottle previously inhabited by Dandruff Shampoo or Extra effective loo cleaner! . . . even when thoroughly cleaned and sterilised after use! PET will handle carbonated or pressurised liquids up to 150psi. Also available in 500ml size.