Clear Glass Vials. Includes 2 mL clear crimp top vials with write-on spot, silver aluminum caps, PTFE/silicone septa. 100 of each. Vial size: 12 x 32 mm (11 mm cap) A-5190-2282. $123.99. Aijiren 2 mL crimp top vials are constructed from Type 1 borosilicate glass, with low metal content, to protect your sample from destabilizing or leaching.