INTERMEDIATE IRON OXIDE GRADES Nominal Size Range (µm) Material 5 – 10 Fe2O3 (Hematite) Fe3O4 (Magnetite) Intermediate iron oxide grade fractions shall contain a minimum of 80% within stated size range as measured by volume %. Iron Oxide Size distributions, other than the ones listed, may be available upon request. Minimum purchase

0-SPECIFIED IRON OXIDE GRADES Nominal Size Ranges Available (µm) Material 0 – 5 Fe2O3 (Hematite) Fe3O4 (Magnetite) 0 – 10 Fe2O3 (Hematite) Fe3O4 (Magnetite) 0-Specified Fractions shall contain a minimum of 96% within stated size range as measured by volume %. 0-specified Iron Oxide grades are available in 500 gram increments.