Graduated Test Tube Illustration - Science Lab Equipment Clipart #297155 (License: Personal Use)

This vector-style illustration depicts a standard glass test tube with a rounded bottom and open top, featuring four horizontal graduation marks along its side for approximate volume estimation. The design is minimalist and monochromatic, emphasizing clarity and functionality-ideal for diagrams, textbooks, or digital learning tools. No liquid or background is shown, keeping focus solely on the instrument’s structure.

Used in educational websites, science curricula, lab manuals, and infographics to represent chemical experimentation, measurement, or general laboratory equipment. Matches user intent for visual reference, clipart downloads, or STEM content illustration.