Natural PP Low Profile Hinged Vials, 4 oz, case/1000

4oz (120ml) Natural Polypropylene Low Profile Hinged Vial. Polypropylene Hinged Vials are leak-proof and airtight and are produced by using a Sterile-by-Process (aseptic) method. Hinged vials are manufactured using a unique, patented process that closes the vial lid while still in the mold and prior to ejecting the container. The process uses temperatures ranging from 390-440°F which is too high to support living organisms. Hinged vials remain closed until they are opened for the first time by the user. The flip-top is integrally hinged to the container, allowing the user to open and close the container with one hand.