ASTM D6659-10(2015)
(Practice)Standard Practice for Sampling and Preparation of Wet Blue for Physical and Chemical Tests
Standard Practice for Sampling and Preparation of Wet Blue for Physical and Chemical Tests
SIGNIFICANCE AND USE
4.1 The sampling procedures described in this practice have been designed to ensure random sampling of wet blue for physical and chemical tests. Wet blue 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 and preparation of wet blue 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 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 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: D6659 − 10(Reapproved 2015)
Standard Practice for
Sampling and Preparation of Wet Blue for Physical and
Chemical Tests
This standard is issued under the fixed designation D6659; 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 3.1.2 unit, n—a piece of wet blue in the form in which it is
purchased, such as a single hide, skin, or any part thereof.
1.1 Thispracticecoversthesamplingandpreparationofwet
blue for physical and chemical tests. The product is grouped
4. Significance and Use
into lots that are randomly sampled in such a manner as to
4.1 The sampling procedures described in this practice have
produce a representative sample of the lot.This sample may be
been designed to ensure random sampling of wet blue for
used to determine compliance of the lot with applicable
physical and chemical tests. Wet blue is a natural product and
specification requirements, and on the basis of results, the lot
as such is subject to extensive variability. The physical and
may be accepted or rejected in its entirety.
chemical properties vary considerably depending on location
1.2 The values stated in inch-pound units are to be regarded
on the hide, side, or skin from which the test sample is taken.
as standard. The values given in parentheses are mathematical
Random sampling of specimens from a predefined location and
conversions to SI units that are provided for information only
orientation minimizes test bias and variability. This practice
and are not considered standard.
defines these parameters.
1.3 This standard does not purport to address all of the
5. Conditioning
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5.1 Unlessotherwisespecifiedintheapplicabletestmethod,
priate safety and health practices and determine the applica-
specification, or procurement document, samples shall be
bility of regulatory limitations prior to use.
tempered to the ambient laboratory conditions prior to prepa-
ration of testing.
2. Referenced Documents
6. Sampling Procedure
2.1 ASTM Standards:
D6658 Test Method for Volatile Matter (Moisture) of Wet
6.1 Prior to sampling, identify the product properly as a lot
Blue by Oven Drying
or batch.
6.2 Select units from locations scattered throughout the lot,
3. Terminology
not from the same portion of the lot, such as a single pallet,
3.1 Definitions:
carton, layer, etc. Take without regard to quality.
3.1.1 lot (or batch), n—units of products from a single type,
6.2.1 The number of samples taken depends on the reliabil-
grade, class, size, and composition, manufactured under essen-
ity of the test results, the deviation of the properties, and the
tially the same conditions and time.
error of the testing procedure. The number of samples taken
3.1.1.1 Discussion—Wet blue in formed lots should be
may be at the discretion of the user and the related test method
produced from: (1) Units of product of similar size and type.
and should also be recorded on the test report. It is recom-
(2) Chromium tanning material obtained from the same pro-
mended that 12 samples be taken for every 50,000 square feet
ducer(orfunctionallyequivalent).(3)Asingleproductmethod.
of hide or skin. These 12 shall be considered a lot, or batch.
(4) Sequential production batches.
NOTE 1—By reason of the high moisture content of wet blue, samples
should be taken after the wringing operation and immediately sealed in
This practice is under the jurisdiction ofASTM Committee D31 on Leather and airtight plastic wrap. Store in a cool place until used.
is the direct responsibility of Subcommittee D31.02 on Wet Blue.
6.3 The standard location for sampling wet blue is the
Current edition approved Dec. 1, 2015. Published December 2015. Originally
kidney area (designated as TEST AREA “ a”in Fig. 1).
approved in 2001. Last previous edition approved in 2010 as D6659 – 10. DOI:
10.1520/D6659-10R15.
Sampling in the belly or shoulder area is only applicable if that
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
is the end product being sold or purchased:
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
6.3.1 Skins—Cutthetestpiecetothesizeandshaperequired
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. for the tests to be made, with one edge parallel to and 1 in.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D6659 − 10 (2015)
FIG. 1 Location of Test Area
(25.4 mm) from the backbone line, beginning 3 in. (76 mm) done in 2 min. or less for each individual sample to prevent
from the root of the tail. Pieces shall be cut from only one side significant moisture loss.
of the backbone
...
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: D6659 − 10 D6659 − 10 (Reapproved 2015)
Standard Practice for
Sampling and Preparation of Wet Blue for Physical and
Chemical Tests
This standard is issued under the fixed designation D6659; 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
1.1 This practice covers the sampling and preparation of wet blue 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 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.3 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:
D6658 Test Method for Volatile Matter (Moisture) of Wet Blue by Oven Drying
3. Terminology
3.1 Definitions:
3.1.1 lot (or batch), n—units of products from a single type, grade, class, size, and composition, manufactured under essentially
the same conditions and time.
This practice is under the jurisdiction of ASTM Committee D31 on Leather and is the direct responsibility of Subcommittee D31.02 on Wet Blue.
Current edition approved Oct. 1, 2010Dec. 1, 2015. Published October 2010December 2015. Originally approved in 2001. Last previous edition approved in 20082010
as D6659-08. DOI: 10.1520/D6659-10. – 10. DOI: 10.1520/D6659-10R15.
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.
3.1.1.1 Discussion—
Wet blue in formed lots should be produced from: (1) Units of product of similar size and type. (2) Chromium tanning material
obtained from the same producer (or functionally equivalent). (3) A single product method. (4) Sequential production batches.
3.1.2 unit, n—a piece of wet blue in the form in which it is purchased, such as a single hide, skin, or any part thereof.
4. Significance and Use
4.1 The sampling procedures described in this practice have been designed to ensure random sampling of wet blue for physical
and chemical tests. Wet blue 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 Unless otherwise specified in the applicable test method, specification, or procurement document, samples shall be tempered
to the ambient laboratory conditions prior to preparation of testing.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D6659 − 10 (2015)
6. Sampling 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 pallet, carton,
layer, etc. Take without regard to quality.
6.2.1 The number of samples taken depends on the reliability of the test results, the deviation of the properties, and the error
of the testing procedure. The number of samples taken may be at the discretion of the user and the related test method and should
also be recorded on the test report. It is recommended that 12 samples be taken for every 50,000 square feet of hide or skin. These
12 shall be considered a lot, or batch.
NOTE 1—By reason of the high moisture content of wet blue, samples should be taken after the wringing operation and immediately sealed in airtight
plastic wrap. Store in a cool place until used.
6.3 The standard location for sampling wet blue is the kidney area (designated as TEST AREA “ a” in Fig. 1). Sampling in the
belly or shoulder area is only applicable if that is the end product being sold or purchased:
6.3.1 Skins—Cut the test piece to the size and shape required for the tests to be made, with one edge parallel to and 1 in. (25.4
mm) from the backbone line, beginning 3 in. (76 mm) from the root of the tail. Pi
...
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