Ferrofluid Sample 1oz (30ml) in Amber Glass Bottle

Magnetic Ferrofluid Sample | Science Classroom Supplies | Kids Science Projects | 1oz (30ml) in Glass Bottle

SPACECARE Magnetic Sand Iron Filings Iron Powder Filings Magnetic Power for Magnet Education and School Projects, Storage (12 Ounces) with Shaker Lid, 1 Pack Iron Oxide Powder Shavings for Science

MIKEDE Strong Rare Earth Neodymium Magnets, Heavy Duty Bar Magnets with Double-Sided Adhesive, Powerful Pull Force, Perfect for Fridge, Garage, Kitchen, Science, Craft, Office, DIY 60x10x3mm 6pack