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Description of ASTM-D8516 2023ASTM D8516-23Active Standard: Standard Test Method for Quantification of Culturable Waterborne Bacteria Using a Defined Culture Medium Coated PlateASTM D8516Scope 1.1 This test method describes a simple procedure for the quantification of culturable, waterborne bacteria in potable water (drinking water, bottled water, and dental water, for example) and non-potable waters (cooling towers, for example). 1.1.1 The EasyDisc2, 3 plate format is designed to test 1 mL of a water sample on a 47 mm gridded plate containing a growth reagent embedded to the plate’s inner surface. 1.1.2 Detection is based on colorimetric technology in which viable, aerobic, heterotrophic, waterborne bacteria grow when present in the water sample, displaying a color reaction which allows for a simplified visualization of colony growth. 1.2 Each plate can accurately detect up to 300 colony forming units per 1 mL (CFU/1 mL) of sample. To increase the quantification range, a sample dilution can be used. Adjust the CFU/mL result to reflect dilutions. 1.3 This test method can be used for potable (for example, drinking, bottled, and dental) waters and non-potable waters such as cooling tower waters. It is the user’s responsibility to adhere to all requirements by local regulations and ensure the validity of this test method for waters other than those tested as part of the Interlaboratory Study (ILS). 1.4 The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This 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. Keywords bottled water; confluent growth; cooling towers; counting colonies; dental water; drinking water; EasyDisc PCA; EasyDisc R2A; EasyDisc YEA; heterotrophic plate count; plate count agar; pour plate; R2A; Reasoners 2 Agar; total plate count; total viable count; yeast extract agar; ICS Code ICS Number Code 07.100.20 (Microbiology of water) DOI: 10.1520/D8516-23 This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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