aijiren HPLC 2ml Vial 6mm Inserts for ND9mm Vial C0000070 - aijiren Products Made In China, China Manufacturer. aijiren HPLC 2ml Vial 6mm Inserts for ND9mm Vial Item Number Description C0000070 6x29mm Insert Clear Glass Conical Base with Polyspring. 100pcs/pk. C0000072 6x31mm Insert Clear Glass Conical Base. 100pcs/pk. C0000073 6x31mm Insert Clear Glass Flat Base. 100pcs/pk.