1.1These test methods cover four ashing methods for cellulose. These are intended for use on unbleached and bleached cellulose in sheeted or bulk fiber form. Each one of the test methods has advantages, so that preference applications exist for all four.

1.2The test methods appear as follows:

	Sections
Test Method A-Ash in Cellulose at 575°C	6 to 11
Test Method B-Sulfated Ash in Cellulose at 575°C	12 to 17
Test Method C-Ashing Cellulose by Schoniger Oxidation	18 to 22
Test Method D-Wet Ashing of Cellulose for Inorganics	23 to 29

1.3The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.4This 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For a specific hazard statement, see 20.6.1.

1.5This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.