2ml 11mm Snap Top HPLC Vials for Aijiren. 2ml snap HPLC vials are less likely to be damaged when removing the cap because there is a lot of glass used in the vial neck. Snap-neck HPLC vials are compatible with either crimps or snap vial devices. You don’t need any special tools to remove the cap. Because seals are not as safe as crimps or