Colorful Test Tubes in Lab Rack - Science Education Illustration #1858915 (License: Personal Use)

This stylized vector illustration depicts six standard glass test tubes held horizontally in a wooden rack, each containing a uniquely colored liquid: red, orange, yellow, green, blue, and purple. The design uses bold outlines and flat colors to emphasize clarity and visual appeal for learning materials. It’s commonly used in educational contexts to represent chemical reactions, pH indicators, or sample identification.

Used on educational websites, science curriculum pages, lab safety manuals, or infographics explaining laboratory procedures; matches user intent for visual aids in STEM teaching or introductory chemistry content.