ASTM D7315-17

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it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D7315 − 12 D7315 − 17
Standard Test Method for
Determination of Turbidity Above 1 Turbidity Unit (TU) in
1
Static Mode
This standard is issued under the fixed designation D7315; 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 Scope*
1.1 This test method covers the static determination of turbidity in water. Static refers to a sample that is removed from its
source and tested in an isolated instrument. (See Section 4.)
1.2 This test method is applicable to the measurement of turbidities greater than 1.0 turbidity unit (TU). The upper end of the
measurement range was left undefined because different technologies described in this test method can cover very different ranges.
The round robin study covered the range of 0–4000 turbidity units because instrument verification in this range can typically be
covered by standards that can be consistently reproduced.
1.3 Many of the turbidity units and instrument designs covered in this test method are numerically equivalent in calibration
when a common calibration standard is applied across those designs listed in Table 1. Measurement of a common calibration
standard of a defined value will also produce equivalent results across these technologies.
1.3.1 In this test method calibration standards are often defined in NTU values, but the other assigned turbidity units, such as
those in Table 1 are equivalent. For example, a 1 NTU formazin standard is also a 1 FNU, a 1 FAU, a 1 BU, and so forth.
1.4 This test method does not purport to cover all available technologies for high-level turbidity measurement.
1.5 This test method was tested on different natural waters and wastewater, and with standards that will serve as surrogates to
samples. It is the user’s responsibility to ensure the validity of this test method for waters of untested matrices.
1.6 Depending on the constituents within a high-level sample, the proposed sample preparation and measurement methods may
or may not be applicable. Those samples with the highest particle densities typically prove to be the most difficult to measure. In
these cases, and alternative measurement method such as the process monitoring method can be considered.
1.7 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. Refer to the MSDSs for all chemicals used in this procedure.
1.8 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D1129 Terminology Relating to Water
D1193 Specification for Reagent Water
3
D1889 Test Method for Turbidity of Water (Withdrawn 2007)
D2777 Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water
D4411 Guide for Sampling Fluvial Sediment in Motion
D5847 Practice for Writing Quality Control Specifications for Standard Test Methods for Water Analysis
D6855 Test Method for Determination of Turbidity Below 5 NTU in Static Mode
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
1
This test method is under the jurisdiction of ASTM Committee D19 on Water and is the direct responsibility of Subcommittee D19.07 on Sediments, Geomorphology,
and Open-Channel Flow.
Current edition approved June 1, 2012July 1, 2017. Published June 2012July 2017. Originally approved in 2007. Last previous edition approved in 20072012 as
D7315 – 07D7315 – 12.A. DOI: 10.1520/D7315-12.10.1520/D7315-17.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United Stat
...

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: D7315 − 17
Standard Test Method for
Determination of Turbidity Above 1 Turbidity Unit (TU) in
1
Static Mode
This standard is issued under the fixed designation D7315; 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* to measure. In these cases, and alternative measurement
method such as the process monitoring method can be consid-
1.1 This test method covers the static determination of
ered.
turbidity in water. Static refers to a sample that is removed
1.7 This standard does not purport to address all of the
from its source and tested in an isolated instrument. (See
safety concerns, if any, associated with its use. It is the
Section 4.)
responsibility of the user of this standard to establish appro-
1.2 This test method is applicable to the measurement of
priate safety, health, and environmental practices and deter-
turbidities greater than 1.0 turbidity unit (TU). The upper end
mine the applicability of regulatory limitations prior to use.
of the measurement range was left undefined because different
Refer to the MSDSs for all chemicals used in this procedure.
technologies described in this test method can cover very
1.8 This international standard was developed in accor-
different ranges. The round robin study covered the range of
dance with internationally recognized principles on standard-
0–4000 turbidity units because instrument verification in this
ization established in the Decision on Principles for the
range can typically be covered by standards that can be
Development of International Standards, Guides and Recom-
consistently reproduced.
mendations issued by the World Trade Organization Technical
1.3 Many of the turbidity units and instrument designs
Barriers to Trade (TBT) Committee.
covered in this test method are numerically equivalent in
2. Referenced Documents
calibration when a common calibration standard is applied
2
across those designs listed in Table 1. Measurement of a
2.1 ASTM Standards:
common calibration standard of a defined value will also
D1129 Terminology Relating to Water
produce equivalent results across these technologies.
D1193 Specification for Reagent Water
1.3.1 In this test method calibration standards are often
D2777 Practice for Determination of Precision and Bias of
defined in NTU values, but the other assigned turbidity units,
Applicable Test Methods of Committee D19 on Water
such as those in Table 1 are equivalent. For example, a 1 NTU
D4411 Guide for Sampling Fluvial Sediment in Motion
formazin standard is also a 1 FNU, a 1 FAU, a 1 BU, and so
D5847 Practice for Writing Quality Control Specifications
forth.
for Standard Test Methods for Water Analysis
D6855 Test Method for Determination of Turbidity Below 5
1.4 This test method does not purport to cover all available
technologies for high-level turbidity measurement. NTU in Static Mode
E691 Practice for Conducting an Interlaboratory Study to
1.5 This test method was tested on different natural waters
Determine the Precision of a Test Method
and wastewater, and with standards that will serve as surro-
2.2 Other Referenced Standards:
gates to samples. It is the user’s responsibility to ensure the
U.S. EPA Method 180.1 Methods for Chemical Analysis of
validity of this test method for waters of untested matrices.
3
Water and Wastes, Turbidity
4
1.6 Depending on the constituents within a high-level
ISO 7027 Water Quality—Determination of Turbidity
sample, the proposed sample preparation and measurement
methods may or may not be applicable. Those samples with the
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
highest particle densities typically prove to be the most difficult
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
1 3
This test method is under the jurisdiction of ASTM Committee D19 on Water Available from United States Environmental Protection Agency (EPA), William
and is the direct responsibility of Subcommittee D19.07 on Sediments, Jefferson Clinton Bldg., 1200 Pennsylvania Ave., NW, Washington, DC 20460,
Geomorphology, and Open-Channel Flow. http://www.epa.gov.
4
Current edition approved July 1, 2017. Published July 2017. Originally approved Available from International Organization for Standardization (ISO), ISO
in 2007. Last previous edition approved in 2012 as D7315 – 12. DOI: 10.1520/ Central Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier,
D7315-17. Geneva, Switzerland, http://www.iso.org.
*A Summary of Cha
...