Test Tube black outline icon
Graduated test tube with thick rim and liquid filling the lower half
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About the Test Tube black outline icon
An upright cylindrical tube with a rounded base, a heavy rolled rim at the top and four short graduation marks stepping down its left side. A horizontal line shows the sample filling the bottom half. It suits laboratory and diagnostics apps, chemistry and biology education material, pharmaceutical and research websites, medical test result screens and science infographics.
The tall narrow silhouette and thick rim give it a strong vertical read in a square grid, and the fill line adds a clear midpoint. It pairs with flask, microscope and pipette icons in a science set. Because of its narrow width, place it with slightly tighter padding than round icons.
This is the black outline version of the 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.
