VWR Autosampler Vials, Inserts and Closures VWR® AUTOSAMPLER VIALS, INSERTS AND CLOSURES | VWR INTERNATIONAL 3 8mm Standard Opening Screw Thread VWR® 8mm Standard Opening Screw Thread Vials 2mL, 12x32mm, 8mm Standard Opening Screw Thread Vials and Inserts • 8-425 thread finish • Vials feature a write-on patch with graduation for convenient sample identification • Superior