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

This vector-style illustration shows a sturdy brown wooden rack with two horizontal tiers, each holding three upright cylindrical glass test tubes. The tubes are uniformly sized, transparent, and contain a small amount of light-blue liquid at the base, suggesting prepared samples or reagents. The clean, minimalist design emphasizes functionality and is typical of educational diagrams.

Used in educational websites, science textbooks, lab safety guides, and chemistry curriculum pages to illustrate standard lab equipment setup; matches user intent for visual learning, equipment identification, or instructional material creation.