Standard Test Method for
Column Capacity of Particulate Mixed Bed Ion
Exchange Materials1

This standard is issued under the fixed designation D 3375; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of the last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.

1. Scope

1.1 This test method covers the determination of the performance of particulate mixed bed ion exchange materials in the
regenerated form when used for deionization. It is intended for
use in testing unused mixed bed materials and samples of
regenerated mixed beds from operating units.

1.2 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

2.1 ASTM Standards:
D 1125 Test Methods for Electrical Conductivity and Resistivity of Water2
D 1129 Terminology Relating to Water2
D 1193 Specification for Reagent Water2
D 1293 Test Methods for pH of Water2
D 1782 Test Methods for Operating Performance of Particulate Cation-Exchange Materials3
D 2687 Practices for Sampling Particulate Ion-Exchange
Materials3
D 2777 Practice for Determination of Precision and Bias of
Applicable Methods of Committee D19 on Water2

3. Terminology

3.1 Definitions—For definitions of terms related to water,
refer to Terminology D 1129.

4. Summary of Test Method

4.1 This test method consists of exhausting a column of
regenerated mixed bed ion exchange material to a specific end
point with an influent solution of known composition and
volume.

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