Round Bottom Test Tube black outline icon

About the Round Bottom Test Tube black outline icon

A straight-sided glass tube with a rounded base sits under a wide rimmed cap, and a horizontal line across the upper third marks the level of the sample inside. Clean and label-free, it stands for lab work, blood tests, chemical analysis and experiments in medical apps, research dashboards, science lesson slides, diagnostic reports and pharmacy sites.

The tall narrow silhouette and stoppered collar distinguish it from a flask or beaker, while the single fill line suggests contents without shading. Group it with microscope, flask and pipette icons; the fill line still reads clearly down to 24 px.

This is the black outline version of the round bottom test tube icon: even, monoline strokes that stay crisp at small sizes and suit clean, minimal interfaces, wireframes and light backgrounds.

Get it free as an SVG vector or transparent PNG (16-512px), copy the SVG code, or restyle it in the free online editor — recolor any part, add gold, neon or gradient effects, animate it, or export EPS, PDF and DXF.

Free for personal and commercial use with attribution.