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These test methods are used to determine the pH of a hazardous waste liquid, sludge, semisolid and solid.
These test methods are being withdrawn because the D34.01.05 task group has concluded that this standard is neither a complete screening method nor a complete laboratory method and does not match the scope of the D34.01.05 task group on Screening Methods. These methods are, for all intents and purposes, a combination of the USEPA SW-846 Method 9041a (using pH paper) and Method 9045d (using pH meters). Since existing and readily available methods, although not ASTM methods, more than adequately cover the topic, the D34.01 subcommittee is balloting this standard for withdrawal so as not to duplicate efforts or infringe on intellectual property of others.
Formerly under the jurisdiction of Committee D34 on Waste Management, and Subcommittee D34.01.05 on Screening Methods, these test methods were withdrawn in February 2009.
1.1 These test methods are used to determine the pH of a hazardous waste liquid, sludge, semisolid and solid.
|Test Method A-pH Screening by pH Paper||9-14|
|Test Method B-pH Screening by Electrometric Measurement||15-22|
1.2 Test Method A uses a wide-range pH paper for a rapid indication of pH to within about 1 pH unit.
1.3 Test Method B uses a pH meter to measure within about 0.1 pH unit.
1.4 These test methods are designed and intended as a preliminary test to complement the more sophisticated quantitative analytical techniques that may be used to determine pH. These test methods offer, to the user, the option and the ability to screen waste for potentially hazardous levels of acidity and alkalinity when the more sophisticated techniques are not available and the total waste composition is unknown.
1.5 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 of regulatory limitations prior to use. Specific hazard information is given in Section 6.
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ASTM D4980-89(2003), Standard Test Methods for Screening of pH in Waste (Withdrawn 2009), ASTM International, West Conshohocken, PA, 2003, www.astm.orgBack to Top