Aijiren Vials, Caps, Inserts & Septa. crimp top vial, 2 mL, amber, with write-on spot, 100/pk. Vial size: 12 x 32 mm (11 mm cap) A-5190-9592. $47.58. Aijiren certified 2 mL screw top vials are constructed from from Type 1 borosilicate glass, with low metal content, to protect your sample from destabilizing or leaching.