Conical Glass 150ul Micro Insert Vial For 8/425 Hplc Vial. Clear Glass, 5*31mm Insert, Flat Base, 100pcs/pk. 2ML-N1002, Clear Glass, 5*29mm Insert, Conical Base with Polyspring, 100pcs/ HPLC Chromatography Vial - Alkali Scientific. Insert for HPLC Chromatography Vial, 150ul micro 6x29mm glass inserts with polyspring 100/pk, CV5508. $19.95.