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Significance and Use
The presence of water extractables in ion-exchange resins can cause fouling of other materials downstream and contamination of process water. The quantity of water extractables is sometimes used as a specification to indicate resin quality, and typical values are 0.01 to 0.1 %.
It is recognized that this test method may not remove all potential sloughage products and does not measure volatile compounds. More extensive extraction and identification of compounds may be needed in specific cases.
1.1 This test method covers the measurement of water soluble extractable residue from particulate ion-exchange resins based on elevated temperature extraction and gravimetric determination of residue.
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 and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D1129 Terminology Relating to Water
D1193 Specification for Reagent Water
D2187 Test Methods for Physical and Chemical Properties of Particulate Ion-Exchange Resins
D2687 Practices for Sampling Particulate Ion-Exchange Materials
D2777 Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water
ICS Number Code 13.060.50 (Examination of water for chemical substances)
ASTM D5627-94(2009)e1, Standard Test Method for Water Extractable Residue from Particulate Ion-Exchange Resins, ASTM International, West Conshohocken, PA, 2009, www.astm.orgBack to Top