Petroleum products - Determination of carbon residue - Micro method; Technical Corrigendum 1

This document serves as a technical correction to the original specification developed by the International Organization for Standardization concerning petroleum products. It specifically addresses the method for determining the carbon residue content using the Ramsbottom procedure, also known as the Conradson carbon number test, though the text focuses on the quantitative analysis of carbonaceous residue formed when hydrocarbon samples are subjected to controlled heating. The original standard was issued in 1993 to provide a consistent approach for assessing the coke-forming tendency of oils and related fuels. However, specific technical inaccuracies or editorial errors identified in the initial release required formal amendment. This corrigendum, published several years later, outlines necessary updates to ensure data reliability and methodological consistency across global testing laboratories. It clarifies procedural details to prevent misinterpretation during the execution of the test, thereby maintaining the integrity of results obtained in quality control and product specification evaluations. The content provides precise instructions on handling deviations found in the 1993 version, ensuring that all practitioners adhere to the corrected protocol for accurate measurement of residue levels in various fuel types.