Laboratory Test Tube Rack black filled icon
Four stoppered test tubes with liquid standing in a rack inside a circle outline
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About the Laboratory Test Tube Rack black filled icon
Four test tubes stand side by side in a two-bar rack, each capped with a flat stopper and half filled with a ribbed liquid marking. A circular border frames the set. It communicates sample testing, diagnostics, analysis and scientific research, so it suits medical lab websites, blood test booking flows, pharmaceutical product pages, school chemistry material and research report slides.
The rack bar anchors the four tubes on a shared baseline, giving the icon a stable rectangular mass that balances the round frame. It pairs naturally with microscope, flask, petri dish and syringe icons, and the tube fill pattern stays clean from 32 px upward.
This is the solid black filled version of the laboratory test tube rack icon: a bold silhouette that reads clearly at 16-24 px and on dark or busy backgrounds, and prints well in one colour.
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.
