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ASTM D4582-91(2001)

Current Reaffirmation

Standard Practice for Calculation and Adjustment of the Stiff and Davis Stability Index for Reverse Osmosis (Withdrawn 2019)

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1.1 This practice covers the calculation and adjustment of the Stiff and Davis Stability Index (S & DSI) for the concentrate stream of a reverse osmosis device. This index is used to determine the need for calcium carbonate scale control in the operation and design of reverse osmosis installations. This practice is applicable for concentrate streams containing more than 10 000 mg/L of total dissolved solids. For concentrate streams containing less than 10 000 mg/L of total dissolved solids, refer to Practice D3739.

1.2 This standard does not purport to address the safety problems, 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.


SDO ASTM: ASTM International
Document Number D4582
Publication Date June 28, 1991
Language en - English
Page Count 4
Revision Level 91(2001)
Supercedes
Committee D19.08
Publish Date Document Id Type View
June 15, 2023 D4582-23 Revision
May 1, 2010 D4582-10 Revision
Jan. 1, 2005 D4582-05 Revision
June 28, 1991 D4582-91R01 Reaffirmation
June 28, 1991 D4582-91R96 Reaffirmation