Graduated Test Tube with Liquid - Laboratory Measurement Tool #1858890 (License: Personal Use)

This illustration shows a transparent cylindrical test tube with evenly spaced graduation marks along its length, indicating volume measurements in milliliters. The lower portion contains a gray-colored liquid up to a specific mark, demonstrating how scientists quantify reagents or samples. The design reflects common lab-grade glassware used in educational and research settings.

Used on science education websites, lab supply catalogs, chemistry textbooks, or instructional pages explaining volumetric measurements; matches user intent for learning about lab equipment or purchasing glassware.