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About This Item
Full Description
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.
Document History
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ASTM D1238-23a
Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer- Most Recent
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ASTM D1238-23
Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer- Historical Version
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ASTM D1238-20
Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer- Historical Version
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ASTM D1238-13
Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer- Historical Version
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ASTM D1238-10
Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer- Historical Version
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ASTM D1238-04c
Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer- Historical Version
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ASTM D1238-04b
viewing
Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer- Historical Version
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ASTM D1238-04a
Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer- Historical Version
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ASTM D1238-04
Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer- Historical Version
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ASTM D1238-01e1
Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer- Historical Version
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ASTM D1238-00
Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer- Historical Version
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ASTM D1238-90b
Standard Test Method for Flow Rates of Thermoplastics by Extrusion Plastometer- Historical Version
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ASTM D1238-85
Standard Test Method for Flow Rates of Thermoplastics by Extrusion Plastometer- Historical Version