Test Tube black filled icon

About the Test Tube black filled icon

This icon shows a test tube tilted diagonally, with a wavy line inside suggesting liquid contents, a rounded closed bottom, and a flared rim at the open end. It represents chemistry, lab testing, and scientific analysis. Use it in chemistry apps, biology course material, lab inventory tools, pharma branding, and science education content.

The diagonal tilt and curved liquid line give the tube a sense of motion and volume, distinguishing it from an upright glassware icon. It pairs with the Flask, Microscope, and Petri Dish icons in the library. Small sizes still read clearly thanks to the simple flared-rim silhouette.

This is the solid black filled version of the test tube icon: a bold silhouette that reads clearly at 16-24 px and on dark or busy backgrounds, and prints well in one colour.

It downloads free as an SVG vector or transparent PNG in seven sizes, and the free online editor lets you recolor it, apply gold, silver, neon and gradient styles, add animation, or convert it to EPS, PDF and DXF.

Free for personal and commercial use with attribution.