Empty Test Tube Illustration - Lab Equipment Clipart #1858801 (License: Personal Use)

This black-and-white line illustration depicts a standard cylindrical glass test tube with a rounded bottom and open rim, commonly used in chemistry and biology labs. The clean, uncluttered design emphasizes functionality and is suitable for diagrams, infographics, or instructional materials. Its simplicity ensures scalability and legibility across digital and print media.

Used in science education websites, lab procedure guides, medical illustrations, or STEM resource pages where a generic, non-distracting representation of labware is needed. Matches user intent for clipart, iconography, or schematic support in academic or technical content.