Test Tubes in Laboratory Rack - Science Experiment Setup #1544645 (License: Personal Use)

This illustration shows a classic two-tier wooden test tube rack holding six transparent glass test tubes-three on the top tier and three aligned below. Each tube contains a small volume of pale blue liquid, suggesting a controlled experiment or sample preparation in a school or research lab setting. The clean, schematic style emphasizes clarity and educational utility.

Used in educational websites, science curricula, lab safety manuals, or chemistry resource pages to visually represent basic lab equipment and experimental setups; matches user intent for learning about lab tools or preparing classroom materials.