2ml HPLC vials (ND9 HPLC vials) Category : Medical Disposable Items mm 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 write-in