Applied Magnets Magnetic Ferrofluid -2oz- 60ML Bottle, Great for Science Projects 60 ml (2 ounces) of ferrofluid in Original Factory Packaging. Please read MATERIAL SAFETY DATA SHEET located at policies section before usage. Or use this link to view ferrofluid MSDS: http://www.amazon.com/gp/aag/details?seller=A1T24Q2YX26SWS#custom1 NOT RECOMMENDED FOR CHILDREN UNDER THE AGE OF 12, NOT DRINKABLE.