ASTM D1500 – Color of Petroleum Products A Deep Technical Perspective for Turbine Oil Engineers I was in the field and noted two cases. 1. What is ASTM D1500? ASTM D1500 is a standardized visual test method used to determine the color of petroleum products, including turbine oils, by comparing the sample against a calibrated color scale. … Continue reading ASTM D1500 – Color of Turbine Oils