Patent ID: 7059768

Claim:
A set of standards comprising: a plurality of ferromagnetic slugs for the temperature calibration of a vacuum thermogravimetric analyzer (VTGA), each of said ferromagnetic slugs having a Curie temperature wherein the Curie temperature values fall within a preselected range, wherein each of said slugs is comprised of an alloy containing an amount of a ferromagnetic constituent and an amount of a non-ferromagnetic constituent, wherein the amount of said ferromagnetic constituent and non-ferromagnetic constituent for each of said slugs is selected to provide a Curie temperature within said preselected range; wherein; prior to the use of each of said slugs, each of said slugs is placed in a magnetic field having sufficient magnitude of at least 1 Tesla to provide a well defined magnetic transition at the Curie temperature, and wherein each of said slugs has a coercivity, and wherein said magnitude of said magnetic field is at least greater than the coercivity of each slug.