ASTM Standards ASTM D1318-23 pdf free download – Standard Test Method For Sodium In Residual Fuel Oil (Flame Photometric Method) ASTM D1318-23 pdf free download,Standard Test Method For Sodium In Residual Fuel Oil (Flame Photometric Method). 1.1 This test method covers the determination of sodium in residual fuel oil by means of a flame photometer. Its precision... 09-11 Read More