Wholesales 2 ml hplc vials with inserts online Aijiren. 1.5ml Screw Vial with Intergrated Conical Insert 1.5ml Vial Insert Most shells hplc vials &gc vials are sold the vials a polyethylene cap that has a starburst design for easy needle 1. 2 ml, 12 x 32 mm. 2.