pp 250ul 2ml vial insert 10-425 HPLC vials Chrominex Vial, Insert, 250UL manufacturer / supplier in China, offering 250UL Micro Insert with Mandrel Interior Conical Suits for ND9 Vials, 1.5ml 10-425 Vial Screw Neck HPLC Vial, 1.5ml 9mm Vial Screw Neck Sample Vial Caps B-Sc92291 and so on.