OEM sample vials 2ml 9mm screw thread vials with pp cap VWR 9mm 2ml Wide Opening Screw Vials. 9mm screw thread caps, septa, and vials are designed especially for use with Aijiren’s and other rotating or robotic arm samplers 2ml, 12X32mm vials are manufactured of Clear. type 1 Class A or Amber, Type 1 Class B borosilicate glass and include a