Screw Vials, DN8mm. SVS202C. 2mL Clear vial, 12×32mm, DN8mm, Screw top, USP1 Borosilicate Glass. SVS212C. 2mL Clear vial, 12×32mm, DN8mm, Screw top, graduated with writing area, USP1 Borosilicate Glass. SVS202A. 2mL Amber vial, 12×32mm, DN8mm, Screw top, USP1 Borosilicate Glass. SVS212A.