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About This Item

 

Full Description

1.1 This test method covers the determination of the silt density index (SDI) of water. This test method can be used to indicate the quantity of particulate matter in water and is applicable to relatively low (<1.0 NTU) turbidity waters such as well water, filtered water, or clarified effluent samples. Since the size, shape, and nature of particulate matter in water may vary, this test method is not an absolute measurement of the quantity of particulate matter.
1.2 This test method is not applicable for reagent grade water Types I, II, and III of Specification D1193, or effluents from most reverse osmosis and ultrafiltration systems.
1.3 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.
1.4 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.
 

Document History

  1. ASTM D4189-23

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    Standard Test Method for Silt Density Index (SDI) of Water

    • Most Recent
  2. ASTM D4189-07(2014)


    Standard Test Method for Silt Density Index &#40;SDI&#41; of Water (Withdrawn 2023)

    • Historical Version
  3. ASTM D4189-07


    Standard Test Method for Silt Density Index (SDI) of Water

    • Historical Version
  4. ASTM D4189-95(2002)


    Standard Test Method for Silt Density Index (SDI) of Water

    • Historical Version