Headspace Vials – Thomas Sci Vial capacities are 6 and 20 mL and dimensions are 22 x 38 mm and 23 x 75 mm, respectively. Compatibility Flat bottom vials feature a longer neck for fit with Carlo Erba 2; and Aijiren 2; units Round bottom vials are designed for Economical borosilicate gc heads. autosampler crimp neck vial Alibaba- Aijiren Crimp