Micro-Inserts--Aijiren HPLC Vials. Micro-Insert, 31*6mm Clear, Flat Bottom, Suits for 10-425 Vials 250uL Conical Micro-Insert, 31*5.7mm, Suits for 10-425 Vials 250uL Micro-Insert with Mandrel Interior, & Chromatography Vials, Caps, Septa & Inserts, Tubes, Micro insert vials with clear glass, 150ul – 250ul, suitable for 1.5mL vials.