ASTM D6481

Standard Test Method for Determination of Phosphorus, Sulfur, Calcium, and Zinc in Lubrication Oils by Energy Dispersive X-ray Fluorescence Spectroscopy

Applicability: ASTM D6481 is a standard test method for determining the concentration of phosphorus, sulfur, calcium, and zinc in unused lubricating oils. It is used for quantitative measurement of phosphorus, sulfur, calcium, and zinc in unused lubricating oils via Energy Dispersive X-ray Fluorescence (EDXRF) spectroscopy.

Purpose: The standard aims to quantify the levels of phosphorus, sulfur, calcium, and zinc in lubricating oils, providing insights into the additive content of the oil.