ASTM E1831-96
(Guide)Standard Guide for Preparing Certificates for Reference Materials Relating to Chemical Composition of Metals, Ores, and Related Materials (Withdrawn 2005)
Standard Guide for Preparing Certificates for Reference Materials Relating to Chemical Composition of Metals, Ores, and Related Materials (Withdrawn 2005)
SCOPE
1.1 This guide describes the minimum information that should be included or referenced in a certificate for a reference material relating to the chemical compositions of metals, ores, and related materials. The order of headings and the wording may be changed to suit the reference materials or their intended applications. It should not be used to disallow the use of reference materials produced prior to the publication of this guide.
1.2 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.
WITHDRAWN RATIONALE
This guide describes the minimum information that should be included or referenced in a certificate for a reference material relating to the chemical compositions of metals, ores, and related materials. The order of headings and the wording may be changed to suit the reference materials or their intended applications. It should not be used to disallow the use of reference materials produced prior to the publication of this guide.
Formerly under the jurisdiction of Committee E01 on Analytical Chemistry of Metals, Ores, and Related Materials, this practice was withdrawn in May 2005. This standard is being withdrawn without replacement because a major rewrite would be required to bring this standard into compliance with the new version of ISO Guide 31.
General Information
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: E 1831 – 96
Standard Guide for
Preparing Certificates for Reference Materials Relating to
Chemical Composition of Metals, Ores, and Related
Materials
This standard is issued under the fixed designation E 1831; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Certificate Headings
1.1 This guide describes the minimum information that 4.1 The order of headings and their wording may be
should be included or referenced in a certificate for a reference changed to suit the reference materials or their intended
material relating to the chemical compositions of metals, ores, application.
and related materials. The order of headings and the wording 4.1.1 Name and Address of the Certifying Organization—
maybechangedtosuitthereferencematerialsortheirintended Print the name and address of the body or organization that
applications. It should not be used to disallow the use of accepts responsibility for the information on the certificate.
reference materials produced prior to the publication of this 4.1.2 Title of the Document—Use a distinct title, such as
guide. “Certified Reference Material,” “Certificate of Analysis,” or
1.2 This standard does not purport to address all of the “Certificate of a Reference Material.”
safety concerns, if any, associated with its use. It is the 4.1.3 Status of the Certificate—Clearly state the status of
responsibility of the user of this standard to establish appro- the certificate, such as “Provisional” or“ Revised.”
priate safety and health practices and determine the applica- 4.1.4 Name of Material—Name the reference material to
bility of regulatory limitations prior to use. identify its type. For example, “Carbon Steel, 0.14 %” is
preferable to “Steel” and “Labrador Iron Ore” is preferable to
2. Referenced Documents
“Iron Ore.”
2.1 ISO Documents:
4.1.5 Sample Number (and Batch Number)—Assign a
ISO Guide 31—Contents of Certificates of Reference Ma- unique number to each reference material, preferably accom-
terials panied by the initials of the certifying organization, for
ISO 3207, Statistical Interpretation of Data—Determination
example “BCS No. 24A.” Identify renewals by following the
of Statistical Tolerance Interval number with a letter. Increment the letter upward through the
alphabet with each renewal.
3. Significance and Use
4.1.6 Date of Certification—Provide the date of issue of the
3.1 This guide describes the essential contents of a certifi-
certificate and the dates of all revisions.
cate prepared to accompany a reference material to be used for
4.1.7 Other Forms or Sizes of Reference Material—List
the standardization or control of an analytical test method, or
other forms or sizes of the material named on the certificate.
both, or the calibration of an instrument used in carrying out
For example, indicate if one or more packaged units are
analytical testing of metals, ores, and related materials. It is
supplied, such as both chips and disks.
intendedforusebysuppliersorcertifiedreferencematerialsfor
4.1.8 Origin of Reference Material—Provide the origin of
the metals industry.
the reference material that may be helpful to the user in
3.2 This guide is based on criteria described in ISO
interpreting its characteristic, that is, a BOF Heat continuously
Guide 31.
cast into 4 in. by 4 in. billets.
4.1.9 Supplier of Reference Material—If the certifying or-
ganization is not the supplier, list the name and address of the
organization from whom the reference material can be ob-
This guide is under the jurisdiction of ASTM Committee E01 on Analytical
Chemistry for Metals, Ores, and Related Materials and is the direct responsibility of
tained.
Subcommittee E01.22 on Statistics and Quality Control .
4.1.10 Preparer of Reference Material—If the material was
Current edition approved Oct. 10, 1996. Published December 1996.
prepared by an organization other than that which undertook
Available from American National Standards Institute, 11 West 42nd Street,
13th Floor, New York, NY 10036. the testing and certification, identify that organization.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
E1831–96
4.1.11 Description of Reference Material—Provide a gen- whole sample. A minimum specimen size shall be such that
eral description of the material, including a detailed explana- repeated analyses of a specific size will show no more of
tion of the name and the physical character (that is, disks 31 significant standard deviation of the analyte than a larger
mm in diameter) of the material. Mention toxic or hazardous specimen should show.
ingredients in the material with a warning in bold type if
4.1.16.2 Solid samples may show inhomogeneity. Specimen
warranted. Supply a MSDS when required by law or regula- sizes taken for homogeneity testing and certification analyses
tion.
may be mandated by the analytical method and must be
4.1.12 Intended Use—Clearly state the purpose for which described adequately so that the user can use the material
the material was issued so that it is not misused, for example,“ appropriately. Notation should be made when certain compo-
for calibration of instruments for determining the chemical nents are found not to be distributed evenly or if certain
composition of ore samples.” sections of a sample should be avoided. For materials that are
cast from a molten state, the method of chilling should be
4.1.13 Stability, Transportation, and Storage Instructions—
noted.
Describetheconditionsoftransportation,handling,andstorage
that are most favorable to the maximum lifespan of the 4.1.17 Certified Values—List the property, its certified
value, its confidence limits, and the method of analysis in a
reference material and the dependability of its certified values.
tablesimilartotheexamplegiveninTable1.Usefootnotesand
4.1.13.1 Whenever possible, state the date after which the
keys, as needed, to direct the reader to separate sections on the
reference material is no longer valid. When the stability is
statistical treatment that were used for the calculation of the
suspect, but not known exactly, a statement such as the
certified value and its confidence limits.
following is appropriate: “Tests have shown that, in a normal
4.1.18 Uncertified Values—Values for constituents of a
laboratoryatmosphere(absenceofdirectsunlightandtempera-
tures of 10 to 30°C), the sample is stable up to a year. The reference material that do not qualify as certified values must
not be included in Table 1. List them in a second table with an
purchaser will be notified if tests show that the sample is stable
appropriate heading, such as “Uncertified Values.”
for more than a year.”
4.1.19 Values Obtained by Individual Laboratories or
4.1.14 Instructio
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