ASTM D7047-23

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
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.
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Designation: D7047 − 15 D7047 − 23
Standard Test Method for
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Swell Volume of Plantago Insularis (Ovata, Psyllium)
This standard is issued under the fixed designation D7047; 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.
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ε NOTE—Editorially corrected referencing in 11.1 in August 2015.
1. Scope Scope*
1.1 Quantitative test method to determine the swell volume of plantago insularis (Ovata, Psyllium).
1.1 The purpose of this quantitative test method is to provide a means of evaluating the swell volume, millilitres per gram, of
psyllium hydrophilic mucilloid.determining the swell volume plantago insularis (Ovata, Psyllium).
1.2 The volume of swell reflects the amount of hydrophilic mucilloid present in psyllium. The higher the grade of psyllium the
higher the swell volume, thus a greater percent of mucilloid present. For the erosion control industry, the higher the swell volume
of the psyllium the greater it’s bonding strength and relative performance.
1.3 The values stated in SI units are to be regarded as the standard. The values in parentheses are provided for information only.No
other units of measurement are included in this standard.
1.4 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice
D6026.
1.4.1 For purposes of comparing, a measured or calculated value(s) with specified limits, the measured or calculated value(s) shall
be rounded to the nearest decimal or significant digits in the specified limits.
1.4.2 The procedures used to specify how data are collected/recorded or calculated, in this standard are regarded as the industry
standard. In addition, they are representative of the significant digits that generally should be retained. The procedures used do not
consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the user’s objectives;
and it is common practice to increase or reduce significant digits of reported data to be commensurate with these considerations.
It is beyond the scope of this standard to consider significant digits used in analysis methods for engineering design.
1.5 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 healthsafety, health, and environmental practices and determine
the applicability of regulatory limitations prior to use.
1.6 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.
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This test method is under the jurisdiction of ASTM Committee D18 on Soil and Rock and is the direct responsibility of Subcommittee D18.25 on Erosion and Sediment
Control Technology.
Current edition approved June 1, 2015Nov. 1, 2023. Published July 2015November 2023. Originally approved in 2004. Last previous edition approved in 20122015 as
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D7047–12.–15 . DOI: 10.1520/D7047-15.10.1520/D7047-23.
*A Summary of Changes section appears at the end of this standard
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D7047 − 23
2. Referenced Documents
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2.1 ASTM Standards:
D653 Terminology Relating to Soil, Rock, and Contained Fluids
D1193 Specification for Reagent Water
D3740 Practice for Minimum Requirements for Agencies Engaged in Testing and/or Inspection of Soil and Rock as Used in
Engineering Design and Construction
D4753 Guide for Evaluating, Selecting, and Specifying Balances and Standard Masses for Use in Soil, Rock, and Construction
Materials Testing
D6026 Practice for Using Significant Digits and Data Records in Geotechnical Data
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
3. Terminology
3.1 Definitions:
3.1.1 For common definitions of common technical terms used in this standard, refer to Terminology D653.
4. Summary of Test Method
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