ASTM D888-05

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
Designation:D888–05
Standard Test Methods for
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Dissolved Oxygen in Water
This standard is issued under the fixed designation D888; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* 3.2 Definitions of Terms Specific to This Standard:
3.2.1 amperometric systems, n—those instrumental probes
1.1 Thesetestmethodscoverthedeterminationofdissolved
that involve the generation of an electrical current from which
oxygen in water. Three test methods are given as follows:
the final measurement is derived.
Range, mg/L Sections
3.2.2 instrumental probes, n—devicesusedtopenetrateand
Test Method A—Titrimetric Procedure–High Level >1.0 8 to 15
Test Method B—Instrumental Probe Procedure 0.05 to 20 16 to 25
examineasystemforthepurposeofrelayinginformationonits
Test Method C—Luminescence-based Sensor 0.05 to 20 26 to 29
properties or composition. The term probe is used in these test
1.2 The precision of Test MethodsAand B was carried out methods to signify the entire sensor assembly, including
using a saturated sample of reagent water. It is the user’s
electrodes, electrolyte, membrane, materials of fabrications,
responsibility to ensure the validity of the test methods for etc.
waters of untested matrices.
3.2.3 potentiometric systems, n—those instrumental probes
1.3 This standard does not purport to address all of the inwhichanelectricalpotentialisgeneratedandfromwhichthe
safety concerns, if any, associated with its use. It is the
final measurement is derived.
responsibility of the user of this standard to establish appro-
4. Significance and Use
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. For a specific 4.1 Dissolved oxygen is required for the survival and
precautionary statement, see Note 17. growth of many aquatic organisms, including fish. The con-
centration of dissolved oxygen may also be associated with
2. Referenced Documents
corrosivity and photosynthetic activity.The absence of oxygen
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2.1 ASTM Standards:
may permit anaerobic decay of organic matter and the produc-
D1066 Practice for Sampling Steam tion of toxic and undesirable esthetic materials in the water.
D1129 Terminology Relating to Water
5. Purity of Reagents
D1193 Specification for Reagent Water
D2777 Practice for Determination of Precision and Bias of 5.1 Purity of Reagents—Reagent grade chemicals shall be
Applicable Test Methods of Committee D19 on Water used in all tests. Unless otherwise indicated, it is intended that
D3370 Practices for Sampling Water from Closed Conduits all reagents shall conform to the specifications of the Commit-
D5847 Practice for Writing Quality Control Specifications tee on Analytical Reagents of the American Chemical Soci-
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for Standard Test Methods for Water Analysis ety. Other grades may be used if it is first ascertained that the
E200 Practice for Preparation, Standardization, and Storage reagent is of sufficiently high purity to permit its use without
of Standard and Reagent Solutions for Chemical Analysis lessening the accuracy of the determination.
5.1.1 Reagent grade chemicals, as defined in Practice E200,
3. Terminology
shall be used unless otherwise indicated. It is intended that all
3.1 Definitions—For definitions of terms used in these test reagents conform to this standard.
methods, refer to Terminology D1129.
5.2 Unless otherwise indicated, reference to water shall be
understood to mean reagent water conforming to Specification
D1193, Type I. Other reagent water types may be used
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These test methods are under the jurisdiction of ASTM Committee D19 on
provided it is first ascertained that the water is of sufficiently
Water and are the direct responsibility of Subcommittee D19.05 on Inorganic
Constituents in Water.
Current edition approved Aug. 15, 2005. Published August 2005. Originally
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approved in 1946. Last previous edition approved in 2003 as D888–03. DOI: Reagent Chemicals, American Chemical Society Specifications, American
10.1520/D0888-05. Chemical Society, Washington, DC. For suggestions on the testing of reagents not
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or listed by the American Chemical Society, see Analar Standards for Laboratory
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
Standards volume information, refer to the standard’s Document Summary page on and National Formulary, U.S. Pharmacopeial Convention, Inc. (USPC),
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