Application Highlight: Determining Organic Components with Residue on Ignition QApp

Residue on Ignition is a backweighing application used to determine the ratio of inorganic and organic components in samples. The testing procedure can be used for a wide range of sample types to determine inorganic impurities in organic substances, or vice versa. 

Samples are subjected to heat treatment in a drying oven under the influence of oxygen, which destroys organic substances. The loss of mass (i.e., loss on ignition) represents the organic portion of the sample while the residual ash (residue on ignition) represents the inorganic portion.  

Download this informative application highlight and learn about the role your Cubis® II balance plays in this process. 

Commonly Asked Questions:  

  • Which guidelines outline residue on ignition?
    • Residue on ignition has been described in many different norms or 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 (Ph. Eur.) chapter 2.4.14. 
  • What is a Loss on Drying test?
    • Loss on drying is determined by heating a sample in an oven and includes all volatile matter (including water content, solvents). It is designed to measure the residue and loss on ignition in a sample when the sample is dried under specific conditions.

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