1. SCOPE

This standard prescribes the method for determination of asphaltenes content in bitumen by precipitation with normal heptane.

NOTE - Any other instrumental method simulating the manual method may be employed. However, this method shall be the reference method.

2. REFERENCES

The standard given below contain provisions which through reference in this text, constitute provisions of this standard. At the time of publication, the edition indicated was valid. All standards are subject to revision and parties to agreement based on the standard are encouraged to investigate the possibility of applying the most recent edition of these standard:

IS No.        Title

IS 334 : 2023 Glossary of terms relating to bitumen and tar (fourth revision) IS 537 : 2011 Toluene - Specification (second revision)