2ml clear snap top hplc vials for sale--Lab Vials Manufacturer. The 2ml clear snap-top HPLC vials made by aijiren have openings in three sizes: 8mm, 9mm, and 10mm. The 2ml clear snap-top HPLC vials are usually grouped according to the diameter of the vial, the height of the vial, and the finish of the screw. Get Price.