ASTM D4 Standard Test Method for Bitumen Content
1. Scope
1.1 This test method covers the determination of bitumen content in materials containing at least 25 % bitumen. Bitumen content may usually be expeditiously and accurately determined by Procedure No. 1, Section 7. However, some bituminous materials containing finely divided mineral matter may clog the filter or the mineral residue may not be easily retained, in which cases Procedure No. 2, Section 8, shall be followed.

1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability and regulatory limitations prior to use. For specific precautionary information, see Section 4.

2. Referenced Documents
2.1 ASTM Standards:
D370 Test Method for Dehydration of Oil-Type Preservatives
E 177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods