ASTM International - ASTM D3739-19

Standard Practice for Calculation and Adjustment of the Langelier Saturation Index for Reverse Osmosis

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Organization: ASTM International
Publication Date: 1 July 2019
Status: active
Page Count: 4
significance And Use:

5.1 In the design and operation of RO installations, it is important to predict the calcium carbonate scaling properties of the concentrate stream. Because of the increase in total dissolved... View More

scope:

1.1 This practice covers the calculation and adjustment of the Langelier saturation index for the concentrate stream of a reverse osmosis (RO) device. This index is used to determine the need for calcium carbonate (CaCo3) scale control in the operation and design of RO installations. This practice is applicable for concentrate streams containing 10 to 10 000 mg/L of total dissolved solids. For concentrate containing over 10 000 mg/L, see Practice D4582.

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

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

ASTM D3739-19
July 1, 2019
Standard Practice for Calculation and Adjustment of the Langelier Saturation Index for Reverse Osmosis
1.1 This practice covers the calculation and adjustment of the Langelier saturation index for the concentrate stream of a reverse osmosis (RO) device. This index is used to determine the need for...
May 1, 2010
Standard Practice for Calculation and Adjustment of the Langelier Saturation Index for Reverse Osmosis (Withdrawn 2019)
In the design and operation of reverse osmosis installations, it is important to predict the calcium carbonate scaling properties of the concentrate stream. Because of the increase in total dissolved...
December 15, 2006
Standard Practice for Calculation and Adjustment of the Langelier Saturation Index for Reverse Osmosis
In the design and operation of reverse osmosis installations, it is important to predict the calcium carbonate scaling properties of the concentrate stream. Because of the increase in total dissolved...
January 1, 2005
Standard Practice for Calculation and Adjustment of the Langelier Saturation Index for Reverse Osmosis
1.1 This practice covers the calculation and adjustment of the Langelier saturation index for the concentrate stream of a reverse osmosis device. This index is used to determine the need for calcium...
June 10, 2003
Standard Practice for Calculation and Adjustment of the Langelier Saturation Index for Reverse Osmosis
1.1 This practice covers the calculation and adjustment of the Langelier saturation index for the concentrate stream of a reverse osmosis device. This index is used to determine the need for calcium...
December 10, 1998
Standard Practice for Calculation and Adjustment of the Langelier Saturation Index for Reverse Osmosis
1.1 This practice covers the calculation and adjustment of the Langelier saturation index for the concentrate stream of a reverse osmosis device. This index is used to determine the need for calcium...
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