Laboratory Test Tube Rack with Glass Tubes - Science Equipment Illustration #286181 (License: Personal Use)

This stylized illustration shows a two-tier wooden test tube rack holding six transparent glass test tubes. The tubes contain pale yellow to off-white liquids at different fill levels, suggesting experimental stages or sample comparisons. Clean lines and consistent shading give it a professional yet accessible look suitable for science education or medical visuals.

Commonly used on educational websites, science blogs, lab equipment pages, or chemistry curriculum materials; supports user intent for visual learning, lab setup examples, or stock imagery for STEM content.