Home » News » Crimp Vials » 5.0 borosilicate crimp top vials with inserts 2ml Snap Vial made of Borosilicate Glass--Aijiren Vials for Aijiren 2ml crimp top certified vials for autosamplers are made of Type 33 and Type 51 COE borosilicate glass with low metal content to prevent sample instability or leaching.