Petroleum products — Determination of carbon residue — Micro method

This technical document establishes a standardized procedure for quantifying the carbon residue within petroleum products using a micro-technique. The method is specifically designed to measure the amount of coke or carbonaceous material that remains after the thermal decomposition of a liquid sample under controlled atmospheric conditions. By utilizing a small sample size, this approach offers significant advantages in terms of reagent consumption and measurement speed while maintaining high precision and repeatability. The outlined protocol ensures consistent results across different testing environments by defining precise temperature profiles, heating rates, and crucible specifications. It serves as a critical reference for quality control laboratories involved in the refining and distribution of fuel oils and lubricants. The methodology focuses on minimizing experimental error and enhancing the reproducibility of data obtained from various petroleum fractions. Adherence to these procedural guidelines facilitates accurate comparison of sample stability and suitability for specific industrial applications. This document provides the necessary framework for analysts to generate reliable data regarding the thermal stability of hydrocarbon fluids without requiring extensive resources.