Flat-bottom insert 98730-04 shown inside vial 98721-01 Description Catalog number Qty/pk Price/pk Screw-thread vials, 2 mL Clear GH-98721-00 100 Clear, graduated white marking spot GH-98721-01 100 Amber, graduated white marking spot GH-98721-02 100 Limited-volume insert, 250 µL Flat-bottom insert, glass GH-98730-04 100 Closures, 8-425 mm