Science Lab Test Tubes - Educational Illustration for Chemistry & Biology #3656555 (License: Personal Use)

This hand-drawn style image features three upright test tubes with thick brown outlines, each containing a distinct liquid: the left tube holds purple liquid filling the lower half, the middle has orange liquid in the lower portion with yellow above, and the right tube contains light blue liquid. The design uses soft pastel tones and a transparent checkerboard background, suggesting digital use in educational or scientific contexts.

This image is typically used in educational websites, science blogs, or classroom materials to visually represent laboratory work, chemical mixing, or sample testing. It matches user intent for finding illustrative, non-photorealistic assets for STEM content, especially for younger audiences or simplified explanations.