![Ferromagnetic Fluid Test Tube](http://www.heebiejeebies.net/cdn/shop/files/HJ-1306-Ferro-Magnetic-wood-stand-2_700x700.jpg?v=1690759080)
Make your very own ferromagnetic fluid and experiment with magnets with this easy-to-use test tube kit.
Each test tube contains a bag of special magnetic powder and a strong magnet, so when you suspend the powder in a liquid, you can place the magnet near the tube and watch amazing