Empty Glass Vial, Sterile 50 ml - 20 mm diameter, Clear, 25/trayEmpty Sterile Glass 50 ml Vials for Injection are pyrogen free. Empty vials are primarily used for mixing different medications or solutions for injection or research applications. The vials come with a removable, protective plastic cap. After removing this plastic protective cap, there is a synthetic rubber (latex free) stopper with an aluminum seal on top for easier needle insertion and maintaining a safe containment and mixing of injectable