Description
Teach your students how to use a magnetic particle solution to reveal obliterated serial numbers in steel. This hands-on forensic activity is designed to engage and excite your students, and it makes an excellent addition to a physics or chemistry lecture on the principals of magnetism.
Kit is safe for school use and does not require acids or a fume hood. It includes a PowerPoint® lecture and lab on CD-ROM and enough materials for a class working in pairs or groups of 3 or 4.
WARNING: Rare earth magnets have a very strong magnetic field. Use with caution. Not for use by children under 10 yrs.