Round Bottom Test Tube black filled icon
Outline icon of a round-bottom test tube with a cap and a fill line
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About the Round Bottom Test Tube black filled 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 solid black filled version of the round bottom test tube icon: a bold silhouette that reads clearly at 16-24 px and on dark or busy backgrounds, and prints well in one colour.
It downloads free as an SVG vector or transparent PNG in seven sizes, and the free online editor lets you recolor it, apply gold, silver, neon and gradient styles, add animation, or convert it to EPS, PDF and DXF.
Free for personal and commercial use with attribution.
