Residue on ignition is a back-weighing application used to determine the ratio of inorganic and organic components in samples. It has been described in many guidelines including DIN EN ISO 3451-1, DIN 18128, DIN EN 12879, DIN 19684-3, DIN EN ISO 1172, DIN EN 1879, DIN 38409-2, DIN 38409-1, USP Chapter 42 <281> and European Pharamacopoeia (PhEur) chapter 2.4.14.