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ASTM D4993-89(1998)e1

Historical Reaffirmation

Standard Practice for Calculation and Adjustment of Silica &#40;SiO<inf>2</inf>&#41; Scaling for Reverse Osmosis (Withdrawn 2023)

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1.1 This practice covers the calculation and adjustment of silica (SiO2) for the concentrate stream of a reverse osmosis system. The calculations are used to determine the need for scale control in the operation and design of reverse osmosis installations. This practice is applicable for all types of reverse osmosis devices (tubular, spiral wound, and hollow fiber).

1.2 This practice is applicable to both brackish waters and seawaters.

1.3 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety problems 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 D4993
Publication Date Dec. 10, 1998
Language en - English
Page Count 3
Revision Level 89(1998)e1
Supercedes
Committee D19.08
Publish Date Document Id Type View
Jan. 1, 2014 D4993-08R14 Revision
May 1, 2008 D4993-08 Revision
June 10, 2003 D4993-89R03 Reaffirmation
Dec. 10, 1998 D4993-89R98E01 Reaffirmation