Test Tube Bubbles black outline icon
Outlined test tube with a stopper cap, liquid inside and bubbles rising from the top
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About the Test Tube Bubbles black outline icon
A round-bottomed test tube topped by a wide rectangular stopper, filled to a wavy liquid line with round bubbles inside the glass and three more escaping above the cap. It reads as an active reaction, a sample under analysis or a blood test in progress. Fits laboratory dashboards, clinic booking flows, diagnostics reports, chemistry lesson slides and science app onboarding.
The tall narrow body sits under a cap that is noticeably wider than the tube, giving the shape a stable top-heavy profile, and the bubbles vary in size to suggest motion. Pair it with microscope, flask and syringe icons; at small sizes the escaping bubbles are the detail to protect.
This is the black outline version of the test tube bubbles icon: even, monoline strokes that stay crisp at small sizes and suit clean, minimal interfaces, wireframes and light backgrounds.
Download it free as a scalable SVG vector or transparent-background PNG in seven sizes (16 to 512px), copy the SVG code straight into your project, or open it in the free online editor to change colors, apply gold, silver, neon and gradient styles, animate it, or convert it to EPS, PDF and DXF.
Free for personal and commercial use with attribution.
