1.1These test methods cover the degree of dispersion of carbon black in rubber. Four test methods are described as follows:

	Sections
Test Method A-Visual Inspection	3 - 11
Test Method B-Agglomerate Count	12 - 22
Test Method C-Microroughness Measurement
with Profilometer	23 - 33
Test Method D-Microroughness Measurement with IFM	34 - 42

1.2The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3This 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 of regulatory limitations prior to use.