Wheaton W225282 Borosilicate Glass Clear Flat Bottom Cap Type Crimp Top, Headspace Cap Size 20mm Vial Size ND20 Color Clear / Transparent Material USP Type 1 Borosilicate Glass Working Volume (mL) 10mL Working Volume (μL) 10000 μL Bottom View Details 20mL Clear, Crimp Neck Headspace Vial, ND20 Round Bottom, 22 Price for sample: $25.00.