Headspace vial manufactured from Type 1 Borosilicate glass by Aijiren. Headspace vial can be available in 6ml, 9ml, 10ml, 12ml, 20ml. Clear or Amber can be choose. Screw Thread Headspace Vials use a 1.25 mm average wall thickness, which offers more reliability when internal pressures build. Our Headspace Vials meet or exceed OEM standards.