9mm 2ml Wide Opening Screw Vials - Quzhou Lab 9mm screw thread caps, septa, and vials are designed especially for use with 2 ml vials and caps supplier''s and other rotating or robotic arm samplers 2ml, 12X32mm vials are manufactured of Clear type 1 Class A or Aer, Type 1 Class B borosilie glass and include a write-in patch for sample identifiion