Description
Bottle contains a small amount of ferrofluid, allowing students to manipulate the magnetic fluid cleanly using neodymium magnets. Comes with neodymium magnets and magnetic knobs. Bottle size, 2″ W x 1″ D x 3-1/2″ H.
WARNING: Neodymium magnets have a very strong magnetic field. Use with caution. Not for use by children under 14 yrs.