2ml sample vials-Aijiren HPLC Vials. 202 - 03 - 24. .5mL/2mL screw neck ND0, 0-425 thread autosampler vials with matched PP screw seals ND0, PTFE/rubber septa & micro-inserts. Aijiren is a supplier of laboratory consumables, focusing on the production of HPLC sample vials.