ASTM D1291-01

    Standard Practice for Estimation of Chlorine Requirement or Demand of Water, or Both


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    1. Scope

    1.1 This practice provides a means of estimating the quantity of chlorine required to be added to a unit volume of water to accomplish a predetermined treatment objective or to completely react with all chlorine reactable substances in the water, or both.

    1.2 Temperature, pH, and initial chlorine dosage are all variables in estimating the optimum chlorination practice. The effects of these variables can be evaluated using this practice.

    1.3 Chlorine residual is determined using Test Method D1253.

    1.4 This practice is applicable to all types of water in which the stated treatment objective can be evaluated or residual chlorine can be measured, or both.

    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. For a specific hazard statement, see Note 1.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D1129 Terminology Relating to Water

    D1193 Specification for Reagent Water

    D1253 Test Method for Residual Chlorine in Water

    D1293 Test Methods for pH of Water

    D3370 Practices for Sampling Water from Closed Conduits


    ICS Code

    ICS Number Code 13.060.50 (Examination of water for chemical substances)

    Referencing This Standard
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    DOI: 10.1520/D1291-01

    Citation Format

    ASTM D1291-01, Standard Practice for Estimation of Chlorine Requirement or Demand of Water, or Both, ASTM International, West Conshohocken, PA, 2001, www.astm.org

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