Test Tube with Blue Liquid - Science Lab Icon #198344 (License: Personal Use)

This vector-style illustration depicts a classic laboratory test tube tilted at an angle, partially filled with vibrant blue liquid up to the third calibration mark. The bold black outline and simple color scheme emphasize clarity and recognizability, making it suitable for educational or scientific contexts. Measurement lines are evenly spaced, suggesting standardized volume increments.

Commonly used on educational websites, science blogs, lab equipment pages, or health-related content to symbolize chemical analysis, experiments, or diagnostics; matches user intent for visual explanations of lab procedures or scientific concepts.