ASTM D2813-03(2008)
(Practice)Standard Practice for Sampling Leather for Physical and Chemical Tests
Standard Practice for Sampling Leather for Physical and Chemical Tests
SIGNIFICANCE AND USE
The sampling procedures described in this practice have been designed to ensure random sampling of finished leather and fabricated leather items for physical and chemical tests. Leather is a natural product and as such is subject to extensive variability. The physical and chemical properties vary considerably depending on location on the hide, side or skin from which the test sample is taken. Random sampling of specimens from a predefined location and orientation minimizes test bias and variability. This practice defines these parameters.
SCOPE
1.1 This practice covers the sampling of finished leather and fabricated leather items for physical and chemical tests. The product is grouped into lots that are randomly sampled in such a manner as to produce a representative sample of the lot. This sample may be used to determine compliance of the lot with applicable specification requirements, and on the basis of results, the lot may be accepted or rejected in its entirety.
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.
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Designation: D2813 − 03(Reapproved 2008)
Standard Practice for
Sampling Leather for Physical and Chemical Tests
This standard is issued under the fixed designation D2813; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope single fabricated-leather article in the form in which it is
purchased, such as a counter, pair of shoes, a gasket, etc.
1.1 This practice covers the sampling of finished leather and
fabricated leather items for physical and chemical tests. The
4. Significance and Use
product is grouped into lots that are randomly sampled in such
4.1 The sampling procedures described in this practice have
a manner as to produce a representative sample of the lot. This
been designed to ensure random sampling of finished leather
sample may be used to determine compliance of the lot with
and fabricated leather items for physical and chemical tests.
applicable specification requirements, and on the basis of
Leather is a natural product and as such is subject to extensive
results, the lot may be accepted or rejected in its entirety.
variability. The physical and chemical properties vary consid-
1.2 This standard does not purport to address all of the
erably depending on location on the hide, side or skin from
safety concerns, if any, associated with its use. It is the
which the test sample is taken. Random sampling of specimens
responsibility of the user of this standard to establish appro-
from a predefined location and orientation minimizes test bias
priate safety and health practices and determine the applica-
and variability. This practice defines these parameters.
bility of regulatory limitations prior to use.
5. Conditioning
2. Referenced Documents
2 5.1 Physical tests of leather and leather products, unless
2.1 ASTM Standards:
otherwise specified in the applicable test method, specification,
D1610 Practice for Conditioning Leather and Leather Prod-
or procurement document, shall be performed under standard
ucts for Testing
atmospheric conditions as described in Practice D1610, which
is 50 6 4 % relative humidity at a temperature of 23 6 1°C
3. Terminology
(73.4 6 2°F).
3.1 Definitions:
3.1.1 lot (or batch)—units of products from a single type,
6. Procedure
grade, class, size, and composition, manufactured under essen-
6.1 Prior to sampling, identify the product properly as a lot
tially the same conditions and time.
or batch.
3.1.2 Leather in formed lots should be produced from:
6.2 Select units from locations scattered throughout the lot,
(1) Units of product of similar size and type.
not from the same portion of the lot, such as a single carton,
(2) Tanning and finishing material obtained from the same
layer, etc. Take without regard to quality.
producer (functionally equivalent).
6.2.1 The number of samples taken depends on the reliabil-
(3) A single product method.
ity of the test results, the deviation of the properties, and the
(4) Sequential production batches.
error of the testing procedure. The number of samples taken
3.1.3 unit—a piece of leather in the form in which it is
may be at the discretion of the user and the related test method
purchased, such as a single hide, skin, or any part thereof, or a
and should also be recorded on the test report.
1 6.3 Location and Size of Cuttings:
This practice is under the jurisdiction ofASTM Committee D31 on Leather and
is the direct responsibility of Subcommittee D31.07 on Physical Properties. This
6.3.1 Skins—Cutthetestpiecetothesizeandshaperequired
practice was developed in cooperation with the American Leather Chemists Assn.
for the tests to be made, with one edge parallel to and 1 in.
(Standard Method J 1 – 1956).
(25.4 mm) from the backbone line, beginning 3 in. (76 mm)
Current edition approved Sept. 1, 2008. Published December 2003. Originally
from the root of the tail. Pieces shall be cut from only one side
approved in 1984. Last previous edition approved in 2003 as D2813 – 03. DOI:
10.1520/D2813-03R08.
of the backbone of each skin. The test area for skins corre-
For referenced ASTM standards, visit the ASTM website
...
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.
Designation:D2813–97 Designation: D 2813 – 03 (Reapproved 2008)
Standard Practice for
Sampling Leather for Physical and Chemical Tests
This standard is issued under the fixed designation D 2813; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope
1.1 This practice covers the sampling of finished leather and fabricated leather items for physical and chemical tests. The
product is grouped into lots that are randomly sampled in such a manner as to produce a representative sample of the lot. This
sample may be used to determine compliance of the lot with applicable specification requirements, and on the basis of results, the
lot may be accepted or rejected in its entirety.
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.
2. Referenced Documents
2.1 ASTM Standards:
D 1610 Practice for Conditioning Leather and Leather Products for Testing
3. Terminology
3.1 Definitions:
3.1.1 lot (or batch)—units of products from a single type, grade, class, size, and composition, manufactured under essentially
the same conditions and time.
3.1.2 Leather in formed lots should be produced from:
(1) Units of product of similar size and type.
(2) Tanning and finishing material obtained from the same producer (functionally equivalent).
(3) A single product method.
(4) Sequential production batches.
3.1.3 unit—a piece of leather in the form in which it is purchased, such as a single hide, skin, or any part thereof, or a single
fabricated-leather article in the form in which it is purchased, such as a counter, pair of shoes, a gasket, etc.
4. Significance and Use
4.1 The sampling procedures described in this practice have been designed to ensure random sampling of finished leather and
fabricated leather items for physical and chemical tests. Leather is a natural product and as such is subject to extensive variability.
The physical and chemical properties vary considerably depending on location on the hide, side or skin from which the test sample
is taken. Random sampling of specimens from a predefined location and orientation minimizes test bias and variability. This
practice defines these parameters.
5. Conditioning
5.1 Physical tests of leather and leather products, unless otherwise specified in the applicable test method, specification, or
procurement document, shall be performed under standard atmospheric conditions as described in Practice D 1610, which is 50
6 4 % relative humidity at a temperature of 23 6 1°C (73.4 6 2°F).
This practice is under the jurisdiction of ASTM Committee D-31D31 on Leather,Leather and is the direct responsibility of Subcommittee D31.07 on Physical
Properties—GeneralProperties . This practice was developed in cooperation with the American Leather Chemists Assn. (Standard Method J 1 – 1956).
Current edition approved April 10, 1997.Sept. 1, 2008. Published July 1997.December 2003. Originally published as D2813–84.approved in 1984. Last previous edition
D2813–91(1996). approved in 2003 as D 2813 – 03.
Annual Book of ASTM Standards, Vol 15.04.
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatservice@astm.org.ForAnnualBookofASTMStandards
volume information, refer to the standard’s Document Summary page on the ASTM website.
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D 2813 – 03 (2008)
6. Procedure
6.1 Prior to sampling, identify the product properly as a lot or batch.
6.2 Select units from locations scattered throughout the lot, not from the same portion of the lot, such as a single carton, layer,
etc. Take without regard to quality.
6.2.1 The number of
...
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