WHEATON® High Recovery Vials, 1mL or 0.03oz Clear, 13-425 Finish with PTFE /14B Rubber Liner, Type I Borosilicate Glass. (1.0 mL V-Vial, Clear, 13-425 S/T Cap)1.0mL Type I Borosilicate Glass V-Vials, Clear, 13-425 with Solid Top Caps. V-Vials feature a smooth and clear bottom instead of a rough ground bottom.