HPLC vial insertsAutosampler vials with caps from Aijiren Micro Insert for for 2mL HPLC vials There have five types of HPLC Micro Insert suitable for 10-425 hplc vials, I300 300uL with Flat Bottom, IV250 250uL Conical Micro-Insert, IP250 250uL Micro insert with Mandrel Interior & Polymer Feet, IV250-I(Economy), and