ASTM D888-12

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
Designation:D888–12
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.
1. Scope E200 Practice for Preparation, Standardization, and Storage
of Standard and Reagent Solutions for Chemical Analysis
1.1 Thesetestmethodscoverthedeterminationofdissolved
oxygen in water. Three test methods are given as follows:
3. Terminology
Range, mg/L Sections
3.1 Definitions—For definitions of terms used in these test
Test Method A—Titrimetric Procedure– >1.0 8 to 15
High Level
methods, refer to Terminology D1129.
Test Method B—Instrumental Probe Procedure— 0.05 to 20 16 to 25
3.2 Definitions of Terms Specific to This Standard:
Electrochemical
3.2.1 amperometric systems, n—those instrumental probes
Test Method C—Instrumental Probe Procedure— 0.05 to 20 26 to 29
Luminescence-Based Sensor
that involve the generation of an electrical current from which
the final measurement is derived.
1.2 The precision of Test MethodsAand B was carried out
3.2.2 instrumental probes, n—devicesusedtopenetrateand
using a saturated sample of reagent water. It is the user’s
examineasystemforthepurposeofrelayinginformationonits
responsibility to ensure the validity of the test methods for
properties or composition.
waters of untested matrices.
3.2.2.1 Discussion—The term probe is used in these test
1.3 The values stated in SI units are to be regarded as
methods to signify the entire sensor assembly, including
standard. No other units of measurement are included in this
electrodes, electrolyte, membrane, materials of fabrications,
standard.
and so on.
1.4 This standard does not purport to address all of the
3.2.3 potentiometric systems, n—those instrumental probes
safety concerns, if any, associated with its use. It is the
inwhichanelectricalpotentialisgeneratedandfromwhichthe
responsibility of the user of this standard to establish appro-
final measurement is derived.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. For a specific
4. Significance and Use
precautionary statement, see Note 17.
4.1 Dissolved oxygen is required for the survival and
2. Referenced Documents
growth of many aquatic organisms, including fish. The con-
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centration of dissolved oxygen may also be associated with
2.1 ASTM Standards:
corrosivity and photosynthetic activity.The absence of oxygen
D1066 Practice for Sampling Steam
may permit anaerobic decay of organic matter and the produc-
D1129 Terminology Relating to Water
tion of toxic and undesirable esthetic materials in the water.
D1193 Specification for Reagent Water
D2777 Practice for Determination of Precision and Bias of
5. Purity of Reagents
Applicable Test Methods of Committee D19 on Water
5.1 Purity of Reagents—Reagent grade chemicals shall be
D3370 Practices for Sampling Water from Closed Conduits
used in all tests. Unless otherwise indicated, it is intended that
D5847 Practice for Writing Quality Control Specifications
all reagents shall conform to the specifications of the Commit-
for Standard Test Methods for Water Analysis
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teeonAnalyticalReagentsoftheAmericanChemicalSociety.
Other grades may be used if it is first ascertained that the
reagent is of sufficiently high purity to permit its use without
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These test methods are under the jurisdiction of ASTM Committee D19 on
lessening the accuracy of the determination.
Water and are the direct responsibility of Subcommittee D19.05 on Inorganic
Constituents in Water.
Current edition approved March 1, 2012. Published March 2012. Originally
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approved in 1946. Last previous edition approved in 2009 as D888–09. DOI: Reagent Chemicals, American Chemical Society Specifications , American
10.1520/D0888-12. 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), Rockville,
the ASTM website. MD.
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NOTICE: This standard has either been superseded and replaced by a new vers
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