ASTM D7903-14(2020)
(Practice)Standard Practice for Determining the Capacity of Oxygen Removal Ion Exchange Cartridges
Standard Practice for Determining the Capacity of Oxygen Removal Ion Exchange Cartridges
SIGNIFICANCE AND USE
5.1 This practice can be used to evaluate unused oxygen removal ion exchange cartridges for conformance to specifications.
5.2 This practice provides for the calculation of capacity in terms of the volume of water treated to an end point level of dissolved oxygen.
5.3 The practice as written assumes that the oxygen removal ion exchange resins in the cartridge are either partially or fully regenerated. Regeneration of the resins is not part of this practice.
5.4 This practice provides for the calculation of capacity on a cartridge basis.
5.5 This practice may be used to test different size oxygen removal resin cartridges. The flow rate of test water and the frequency of sampling are varied to compensate for the approximate volume of resin in the test cartridge.
SCOPE
1.1 This practice covers the determination of the performance of oxygen removal ion exchange resin cartridges in the regenerated form when used for removing dissolved oxygen from water. The test can be used to determine the initial capacity of unused cartridges or the remaining capacity of used cartridges. In this case, performance is defined as oxygen removal capacity (or throughput) to a defined endpoint.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D7903 − 14 (Reapproved 2020)
Standard Practice for
Determining the Capacity of Oxygen Removal Ion Exchange
Cartridges
This standard is issued under the fixed designation D7903; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.1 For definitions of terms used in this standard, refer to
Terminology D1129.
1.1 This practice covers the determination of the perfor-
mance of oxygen removal ion exchange resin cartridges in the
4. Summary of Practice
regenerated form when used for removing dissolved oxygen
from water. The test can be used to determine the initial
4.1 This practice will evaluate the capacity of an oxygen
capacity of unused cartridges or the remaining capacity of used
removalcartridgeforwaterbyrunningatestsolutionofknown
cartridges. In this case, performance is defined as oxygen
oxygen content through a cartridge to a specified endpoint.The
removal capacity (or throughput) to a defined endpoint.
volume will enable a determination of the capacity for the
cartridge to remove dissolved oxygen in water.
1.2 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
5. Significance and Use
standard.
1.3 This standard does not purport to address all of the
5.1 This practice can be used to evaluate unused oxygen
safety concerns, if any, associated with its use. It is the
removal ion exchange cartridges for conformance to specifi-
responsibility of the user of this standard to establish appro-
cations.
priate safety, health, and environmental practices and deter-
5.2 This practice provides for the calculation of capacity in
mine the applicability of regulatory limitations prior to use.
terms of the volume of water treated to an end point level of
1.4 This international standard was developed in accor-
dissolved oxygen.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
5.3 Thepracticeaswrittenassumesthattheoxygenremoval
Development of International Standards, Guides and Recom-
ion exchange resins in the cartridge are either partially or fully
mendations issued by the World Trade Organization Technical
regenerated. Regeneration of the resins is not part of this
Barriers to Trade (TBT) Committee.
practice.
5.4 This practice provides for the calculation of capacity on
2. Referenced Documents
a cartridge basis.
2.1 ASTM Standards:
5.5 This practice may be used to test different size oxygen
D888 Test Methods for Dissolved Oxygen in Water
removal resin cartridges. The flow rate of test water and the
D1129 Terminology Relating to Water
frequency of sampling are varied to compensate for the
D1193 Specification for Reagent Water
approximate volume of resin in the test cartridge.
3. Terminology
6. Apparatus
3.1 Definitions:
6.1 Test assembly (Fig. 1), consisting of the following:
6.1.1 Cartridge, and pressure vessel, if required. Connec-
tions shall be provided at the top and the bottom for the
This practice is under the jurisdiction of ASTM Committee D19 on Water and
is the direct responsibility of Subcommittee D19.08 on Membranes and Ion
admission and removal of the exhausting solution as described
Exchange Materials.
in 8.3, 8.4, and 8.5.
Current edition approved Nov. 1, 2020. Published November 2020. Originally
6.1.2 Test solution tank. Adequate means of regulating and
approved in 2014. Last previous edition approved in 2014 as D7903 – 14. DOI:
10.1520/D7903-14R20.
measuring flow through the cartridge shall be provided. If the
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
test flow rate (8.2) cannot be obtained by gravity feed, then a
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
pump should be used. Make sure all fittings, connections, and
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. wetted pump portals are secure and tight to the atmosphere.
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D7903 − 14 (2020)
FIG. 1 Typical Apparatus for Performance Testing of Oxygen Removal Ion Exchange Cartridges
6.1.3 Measuring oxygen levels of the water in the input and with the test. A continuous monitor of the dissolved oxygen
theoutputofthetestcartridgeinaccordancewithTestMethods levels in the test water must be maintained throughout the
D888. A continuous recorder is recommended. practice.
7.3.1 A single test requires approximately 1000 L of this
7. Reagents
solution for each litre of oxygen removal ion exchange resin
that a cartridge contains assuming dissolved oxygen levels
7.1 Purity of Reagents—Reagent grade chemicals shall be
used in all tests. Unless otherwise indicated, it is intended that close to complete saturation.
all reagents shall conform to the specifications of the Commit-
tee onAnalytical Reagents of theAmerican Chemical Society, 8. Procedure
where such specifications are available. Other grades may be
8.1 Measure the outside diame
...
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