ASTM D2415 Standard Test Method for Ash in Coal Tar and Pitch
3. Summary of Test Method
3.1 The sample is carefully volatilized and burned in a muffle furnace or by other suitable means, after which the carbonaceous residue is completely oxidized and the remaining ash stabilized at 900 °C in the muffle furnace.
4. Significance and Use
4.1 This test method determines the amount of inorganic matter in the sample.
