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ASTM D2813-97

(Practice)

Standard Practice for Sampling Leather for Physical and Chemical Tests

Standard Practice for Sampling Leather for Physical and Chemical Tests

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.

General Information

Status
Historical
Publication Date
09-Apr-1997
ICS
59.140.30 - Leather and furs
Technical Committee
D31 - Leather
Drafting Committee
D31.07 - Physical Properties
Current Stage
Ref Project

Relations

Replaced By
ASTM D2813-03 - Standard Practice for Sampling Leather for Physical and Chemical Tests
Effective Date
01-Oct-2003
Referred By
ASTM D2868-17 - Standard Test Method for Nitrogen Content (Kjeldahl) and Hide Substance Content of Leather, Wet Blue and Wet White
Effective Date
10-Apr-1997
Referred By
ASTM D6015-21 - Standard Test Method for Static Water Absorption of Leather
Effective Date
10-Apr-1997
Referred By
ASTM D2810-18 - Standard Test Method for pH of Leather
Effective Date
10-Apr-1997
Referred By
ASTM D2322-14(2023) - Standard Test Method for Resistance of Shoe Upper Leather to Artificial Perspiration
Effective Date
10-Apr-1997
Referred By
ASTM D4655-95(2023) - Standard Test Methods for Sulfates in Leather (Total, Neutral, and Combined Acid)
Effective Date
10-Apr-1997
Referred By
ASTM D2807-17a - Standard Test Method for Chromic Oxide in Leather (Perchloric Acid Oxidation)
Effective Date
10-Apr-1997
Referred By
ASTM D7255-22e1 - Standard Test Method for Abrasion Resistance of Leather (Rotary Platform, Abraser Method)
Effective Date
10-Apr-1997
Referred By
ASTM D2617-17a - Standard Test Method for Total Ash in Leather
Effective Date
10-Apr-1997
Referred By
ASTM D4704-13(2023) - Standard Test Method for Tearing Strength, Tongue Tear of Leather
Effective Date
10-Apr-1997
Referred By
ASTM D6182-23 - Standard Test Method for Flexibility and Adhesion of Finish on Leather
Effective Date
10-Apr-1997
Referred By
ASTM D2099-14(2023) - Standard Test Method for Dynamic Water Resistance of Shoe Upper Leather by the Maeser Water Penetration Tester
Effective Date
10-Apr-1997
Referred By
ASTM D5053-03(2023) - Standard Test Method for Colorfastness of Crocking of Leather
Effective Date
10-Apr-1997
Referred By
ASTM D7912-14(2023) - Standard Test Method for Resistance of Finish to Heat Aging (Finish Stability)
Effective Date
10-Apr-1997
Referred By
ASTM D3495-10(2023) - Standard Test Method for Hexane Extraction of Leather
Effective Date
10-Apr-1997

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ASTM D2813-97 - Standard Practice for Sampling Leather for Physical and Chemical TestsASTM D2813-97 - Standard Practice for Sampling Leather for Physical and Chemical Tests
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ASTM D2813-97 - Standard Practice for Sampling Leather for Physical and Chemical Tests
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Standards Content (Sample)


NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 2813 – 97
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 (e) 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 4. Significance and Use
1.1 This practice covers the sampling of finished leather and 4.1 The sampling procedures described in this practice have
fabricated leather items for physical and chemical tests. The been designed to ensure random sampling of finished leather
product is grouped into lots that are randomly sampled in such and fabricated leather items for physical and chemical tests.
a manner as to produce a representative sample of the lot. This Leather is a natural product and as such is subject to extensive
sample may be used to determine compliance of the lot with variability. The physical and chemical properties vary consid-
applicable specification requirements, and on the basis of erably depending on location on the hide, side or skin from
results, the lot may be accepted or rejected in its entirety. which the test sample is taken. Random sampling of specimens
1.2 This standard does not purport to address all of the from a predefined location and orientation minimizes test bias
safety concerns, if any, associated with its use. It is the and variability. This practice defines these parameters.
responsibility of the user of this standard to establish appro-
5. Conditioning
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. 5.1 Physical tests of leather and leather products, unless
otherwise specified in the applicable test method, specification,
2. Referenced Documents
or procurement document, shall be performed under standard
2.1 ASTM Standards: atmospheric conditions as described in Practice D 1610, which
D 1610 Practice for Conditioning Leather and Leather is 50 6 4 % relative humidity at a temperature of 23 6 1°C
Products for Testing (73.4 6 2°F).
3. Terminology 6. Procedure
3.1 Definitions: 6.1 Prior to sampling, identify the product properly as a lot
3.1.1 lot (or batch)—units of products from a single type, or batch.
grade, class, size, and composition, manufactured under essen- 6.2 Select units from locations scattered throughout the lot,
tially the same conditions and time. not from the same portion of the lot, such as a single carton,
3.1.2 Leather in formed lots should be produced from: layer, etc. Take without regard to quality.
(1) Units of product of similar size and type. 6.2.1 The number of samples taken depends on the reliabil-
(2) Tanning and finishing material obtained from the same ity of the test results, the deviation of the properties, and the
producer (functionally equivalent). error of the testing procedure. The number of samples taken
(3) A single product method. may be at the discretion of the user and the related test method
(4) Sequential production batches. and should also be recorded on the test report.
3.1.3 unit—a piece of leather in the form in which it is 6.3 Location and Size of Cuttings :
purchased, such as a single hide, skin, or any part thereof, or a 6.3.1 Skins—Cut the test piece to the size and shape
single fabricated-leather article in the form in which it is required for the tests to be made, with one edge parallel to and
purchased, such as a counter, pair of shoes, a gasket, etc. 1 in. (25.4 mm) from the backbone line, beginning 3 in. (76
mm) from the root of the tail. Pieces shall be cut from only one
side of the backbone of each skin. The test area for skins
1 corresponds to area a for cattlehides of Fig. 1.
This practice is under the jurisdiction of ASTM Committee D-31 on Leather,
6.3.2 Cattlehides—The location and size of cutting shall be
and is the direct responsibility of Subcommittee D31.07 on Physical Properties—
General. This practice was developed in cooperation with the American Leather
as follows:
Chemists Assn. (Standard Method J 1 – 1956).
6.3.2.1
...

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ASTM D4704-13(2023)(Test Method)
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4.1 Knowledge of the strength of the sample can be a determining factor for the end use of the product.
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1.1 This test method is intended for determining the tearing strength of leather by measuring the force required to tear a specimen cut perpendicular to the surface. This test method does not apply to wet blue.  
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