VWR® AUTOSAMPLER VIALS, INSERTS AND CLOSURES | VWR INTERNATIONAL 7 Standard Crimp Top VWR® 11mm Crimp Top Vials 2mL, 12x32 Crimp Top Vials and Inserts • Superior quality borosilicate glass • Vials feature a write-on patch with graduation for convenient sample identification • Standard opening vials require inserts with a diameter of 5mm