Standard Practice for Calculation and Adjustment of the Stiff and Davis Stability Index for Reverse Osmosis

Available format(s)

Hardcopy , PDF

Superseded date

24-07-2023

Language(s)

English

Published date

01-01-2005

Publisher

American Society for Testing and Materials

Committee	D 19
DocumentType	Standard Practice
Pages	4
PublisherName	American Society for Testing and Materials
Status	Superseded
SupersededBy	ASTM D 4582 : 2010
Supersedes	ASTM D 4582 : 1991 : R2001

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 10000 mg/L of total dissolved solids. For concentrate streams containing less than 10000 mg/L of total dissolved solids, refer to Practice D 3739.

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.

ASTM D 4472 : 2008 : R2014	Standard Guide for Recordkeeping for Reverse Osmosis and Nanofiltration Systems (Withdrawn 2023)
ASTM D 3739 : 2019	Standard Practice for Calculation and Adjustment of the Langelier Saturation Index for Reverse Osmosis
ASTM D 6161 : 2019	Standard Terminology Used for Microfiltration, Ultrafiltration, Nanofiltration, and Reverse Osmosis Membrane Processes