Use Thermo Scientific™ SureSTART™ 9 mm screw caps with screw vials that have a 9 mm opening, including SureSTART 2 ml glass screw vials, 2 ml gold-grade glass screw vials, total recovery glass screw microvials for <2 ml samples, 1,7 ml high recovery glass screw vials, and glass screw microvials for <2 ml samples (Level 3). Select Level 3 products for ultimate