Test Tube Icon - Science Lab Equipment Illustration #1465176 (License: Personal Use)

This is a minimalist vector illustration of a standard glass test tube with a rounded bottom and open top, outlined in bold black. The tube contains orange-colored liquid up to the second major graduation mark, with four horizontal black lines indicating volume measurements. The design emphasizes clarity and recognizability, making it suitable for icons, infographics, or digital interfaces.

This image is typically used in educational websites, science blogs, lab equipment catalogs, or health-tech dashboards to symbolize chemical analysis, experiments, diagnostics, or laboratory work; it matches user intent for visual shorthand in STEM-related content.