Test Tubes with Colored Liquids - Laboratory Science Equipment #3094828 (License: Personal Use)

The image displays five standard glass test tubes against a black background. From left to right: a tube with ~50% yellow liquid, one with ~30% green liquid, one with ~25% red liquid, an empty tube, and a fifth tube tilted diagonally without liquid. Each tube has a slightly rounded bottom and reflective surface, suggesting a clean, sterile lab environment.

Used in educational websites, science textbooks, lab supply catalogs, or health/chemistry blog posts to illustrate experiments, reagent handling, or basic lab equipment. Matches user intent for visual reference in STEM learning or product display.