Science Lab Test Tube Icon - Free Vector Graphic for Education & Research Sites #3637801 (License: Personal Use)

This vector-style icon depicts a classic laboratory test tube tilted diagonally, outlined in bold black with a vivid lime-green liquid filling roughly two-thirds of its volume. The liquid includes three horizontal measurement marks, suggesting volume calibration typical in scientific contexts. Its minimalist, flat design ensures high legibility at small sizes and suitability for digital interfaces.

Commonly used on educational platforms, science blogs, research institution websites, or app icons to symbolize experimentation, chemical analysis, or laboratory work. Matches user intent for visual metaphors related to science, health, biotech, or STEM learning.