WHEATON® 12 x 32mm Polypropylene Vial With Insert, 8-425, 300µL. See all 4 items in this product family. Manufactured from chemical resistant polypropylene. Economical alternative to glass. Vials are packaged 100 per shelf pack and 10 packs per case. Conical interior ensures maximum retrieval of contents without the hassle of using removable