GL45 bottle amber reagent bottle factory Aijiren-Reagent Standard opening glass vials with caps for hplc sampling 2 mL Standard Opening Vials from Supelco. Our standard 2 mL vial is 12 mm in diameter, 32 mm in height, and has a 4.6 mm opening. The thread size on this vial is 8-425. Choice of clear or amber glass.