Methods of analysis of fats and fatty oils. Other methods. Determination of ash

This document establishes a standardized methodology for the quantitative determination of ash content in fats and fatty oils. The procedure outlines specific laboratory operations required to incinerate a defined sample mass under controlled conditions, ensuring the complete removal of organic material while preserving inorganic residues. Detailed instructions are provided regarding sample preparation, the type of crucibles to be employed, and the precise temperature ranges necessary for the incineration process. Furthermore, the text specifies the cooling procedures and the use of desiccators to prevent moisture absorption prior to weighing. The standard defines the calculation methods to derive the final ash percentage based on the initial sample weight and the residue mass. It also includes provisions for reporting results and addressing common procedural variables that may affect the accuracy of the measurement. This technical specification serves as a reference for laboratories engaged in the quality control and compositional analysis of lipid products, providing a consistent framework for evaluating the mineral content within these substances.