Test Tube Illustration - Scientific Experiment & Lab Reaction Icon #3894500 (License: Personal Use)

This cartoon-style illustration features a classic glass test tube containing a yellow liquid with three black bubbles rising, suggesting a chemical reaction. To the right, three dynamic black lines radiate outward, implying energy release, excitement, or a “eureka” moment. The bold black outlines and minimal color palette give it a clean, modern doodle aesthetic suitable for digital interfaces or print media.

Commonly used on educational websites, science blogs, STEM outreach materials, or app icons to represent experimentation, discovery, chemistry, or innovation. Matches user intent for visual metaphors of scientific process, lab work, or breakthrough ideas.