Chemical Test Tube black outline icon
Outline icon of a graduated test tube with three bubbles rising from the top
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About the Chemical Test Tube black outline icon
This icon shows a tall round-bottomed test tube with a flat capped rim, four measurement graduation marks along its left wall and three small bubbles floating up from the opening. It signals experiments, reactions and sample analysis, making it a fit for laboratory software dashboards, chemistry education apps, medical testing pages, R&D pitch decks and pharmaceutical packaging.
The narrow vertical body gives the icon a distinctive tall silhouette, while the detached bubbles add movement above the rim. It pairs with flask, microscope and dropper icons from the library. Because the graduation ticks are fine, use it at 24px or larger, or swap to the filled style on dark backgrounds.
This is the black outline version of the chemical test tube icon: even, monoline strokes that stay crisp at small sizes and suit clean, minimal interfaces, wireframes and light backgrounds.
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.
