2ml HPLC vials (ND9 HPLC vials) Category : Medical Disposable Items. mm screw thread caps, septa, and vialsare designed especially for use with Aijiren's and other rotating or robotic arm samplers 2ml, 12X32mm vialsare manufactured of Clear Type 1 Class A or Amber, Type 1 Class B borosilicate glass and include a write-in