modern vials are often made of plastics such as polypropylene. There are different types of vials such as a single dose vial and multi-dose vials often used for medications. The single dose vial is only used once whereas a multi-dose vial can be used more than once. The CDC sets specific guidelines on multi-dose vials.

History and etymology

A vial can be tubular, or have a bottle-like shape with a neck. The volume defined by the neck is known as the headspace.The English word "vial" is

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