Colorful Test Tubes Illustration for Science Education & Lab Design #3260842 (License: Personal Use)

This vector illustration features four transparent glass test tubes aligned horizontally, each marked with measurement gradations and filled with a distinct colored liquid-blue, yellow, purple, and green-containing white circular bubbles to suggest effervescence or gas formation. The clean, flat design style makes it suitable for digital learning tools, infographics, and presentation slides in STEM contexts.

Commonly used in educational websites, chemistry lesson plans, science blogs, and children’s learning apps to represent laboratory experiments, chemical mixing, or reaction visualization; matches user intent for free clipart or royalty-free science imagery.