ASTM D2318 Test Method for Quinoline-Insoluble (QI) Content of Tar and Pitch
3. Summary of Test Method
3.1 The sample is digested in hot quinoline and filtered. The insoluble material is washed, dried, and weighed.
4. Significance and Use
4.1 This test method is useful in evaluating and characterizing tar and pitch, and as one element in establishing the uniformity of shipments and sources of supply.
