8-425 autosampler vial septa online Waters-Aijiren HPLC Vials. 1.5ml/2ml Screw Neck ND8, small opening, 8-425 thread autosampler vial with matched PP Screw Seals ND8, PTFE/rubber septa & Micro-Insert Product Description 1.8-425 Standard autosampler vials (11.6*32mm) for GC and HPLC 2.Available with black or white. Chat Now Get Price.