Choose Thermo Scientific™ SureSTART™ High Recovery Glass Snap Top Microvials, Performance Level 3, to maximize injection volume when analyzing <2 mL samples. With outer dimensions of 12x32 mm, these clear and amber glass microvials have an inner V-shaped bottom to enable a relatively high total usable volume and a residual volume of 4 ?L. This is a Performance Level 3 vial, which means it is designed to protect your most valuable samples and deliver consistent, reproducible results for your most demanding analyses.