ASTM D 4981 : 2019

1.1This practice is intended for use prior to preparation of waste samples for organic analysis. Waste samples that have oxidizing compounds may react with certain reagents in the laboratory (for example, organic solvents).

1.2This practice is applicable to the analysis of waste liquids, sludges, and solids.

1.3This practice can neither identify specific oxidizing compounds nor measure concentrations. Since no acid or base is added in this practice, potential oxidizers that require the presence of acid or base will not be detected by this practice.

1.4It is recommended that, prior to this test, waste samples be screened for water compatibility; see Practices D5058.

1.5This practice is designed and intended as a preliminary test to complement quantitative analytical techniques that may be used to determine the presence of oxidizers in wastes. This practice offers the ability to screen waste for potentially hazardous reactions due to oxidizer content when the more sophisticated techniques are not available or the total waste composition is unknown.

1.6The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.7This 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.

1.8This 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.