ASTM-D4456 Historical Revision Information
Standard Test Methods for Physical and Chemical Properties of Powdered Ion Exchange Resins

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Standard Test Methods for Physical and Chemical Properties of Powdered Ion Exchange Resins


1.1 These test methods cover the determination of the physical and chemical properties of powdered ion exchange resins and are intended for use in testing new materials. The following test methods are included:

Test Method AParticle Size Distribution 5 to 15
Test Method BSolids Content16 to 23

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 consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

5.1 This test method covers the instrumental determination of the particle-size distribution of powdered ion exchange resins.

16.1 This test method covers the determination of the percent solids in new powdered ion exchange resins. Both anion resin and cation resin may be tested by this test method. Resins are tested in the ionic form in which they are received.

16.2 It is important to note that ion exchange resins, particularly anion exchange resins in the hydroxide form, are subject to thermal degradation under the conditions of this test. Therefore, volatile degradation products are released along with moisture, resulting in a negative error. However, the value of this test method is that it is simple and reproducible, and it is applicable to as-received samples.

Significance and Use

The particle size distribution of powdered ion exchange resins and, more importantly, the derived parameters of mean particle size and percent above and below specified size limits are useful for determining batch to batch variations and, in some cases, can be related to certain aspects of product performance.

Although automatic multichannel particle size analyzers, of the type described in Section 9, yield information on the entire distribution of sizes present in a given sample, it has been found that, for this application, the numerical value of three derived parameters may adequately describe the particle size characteristics of the samples: the mean particle diameter (in micrometres), the percent of the sample that falls below some size limit, and the percent of the sample that falls above some size limit.


floc; ion exchange; particle size; powdered resin; solids content; Chemical analysis--water applications; Ion exchange resins; Nondestructive evaluation (NDE); Particle analysis--water; Powdered ion exchange resins; Solids content; ICS Number Code 71.100.40 (Surface active agents)

To find similar documents by ASTM Volume:

11.02 (Water (II))

To find similar documents by classification:

71.100.40 (Surface active agents)

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Document Number


Revision Level

1999 R09(E1) EDITION



Modification Type

Reapproval with Ed Change

Publication Date

July 1, 2009

Document Type

Test Method

Page Count

4 pages

Committee Number