ASTM D6659-16
(Practice)Standard Practice for Sampling and Preparation of Wet Blue and Wet White for Physical and Chemical Tests
Standard Practice for Sampling and Preparation of Wet Blue and Wet White 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 and Wet White for physical and chemical tests. Wet Blue and Wet White are natural products and as such are 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 and Wet White 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 − 16
Standard Practice for
Sampling and Preparation of Wet Blue and Wet White for
1
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 3.1.1.2 Discussion—In addition to 3.1.1.1, Wet Blue in
formed lots should be produced from Chromium tanning
1.1 This practice covers the sampling and preparation of
material obtained from the same producer (or functionally
Wet Blue and Wet White for physical and chemical tests. The
equivalent).
product is grouped into lots that are randomly sampled in such
3.1.2 unit, n—a piece of Wet Blue or Wet White in the form
a manner as to produce a representative sample of the lot. This
in which it is purchased, such as a single hide, skin, or any part
sample may be used to determine compliance of the lot with
thereof.
applicable specification requirements, and on the basis of
results, the lot may be accepted or rejected in its entirety.
4. Significance and Use
1.2 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical 4.1 The sampling procedures described in this practice have
been designed to ensure random sampling ofWet Blue andWet
conversions to SI units that are provided for information only
and are not considered standard. Whiteforphysicalandchemicaltests.WetBlueandWetWhite
are natural products and as such are subject to extensive
1.3 This standard does not purport to address all of the
variability. The physical and chemical properties vary consid-
safety concerns, if any, associated with its use. It is the
erably depending on location on the hide, side, or skin from
responsibility of the user of this standard to establish appro-
which the test sample is taken. Random sampling of specimens
priate safety and health practices and determine the applica-
from a predefined location and orientation minimizes test bias
bility of regulatory limitations prior to use.
and variability. This practice defines these parameters.
2. Referenced Documents
5. Conditioning
2
2.1 ASTM Standards:
5.1 Unlessotherwisespecifiedintheapplicabletestmethod,
D6658 Test Method for Volatile Matter (Moisture) of Wet
specification, or procurement document, samples shall be
Blue by Oven Drying
tempered to the ambient laboratory conditions prior to prepa-
ration of testing.
3. Terminology
3.1 Definitions:
6. Sampling Procedure
3.1.1 lot (or batch), n—units of products from a single type,
6.1 Prior to sampling, identify the product properly as a lot
grade, class, size, and composition, manufactured under essen-
or batch.
tially the same conditions and time.
3.1.1.1 Discussion—Wet Blue andWetWhite in formed lots
6.2 Select units from locations scattered throughout the lot,
should be produced from: (1) Units of product of similar size
not from the same portion of the lot, such as a single pallet,
and type. (2) A single product method. (3) Sequential produc-
carton, layer, etc. Take without regard to quality.
tion batches.
6.2.1 The number of samples taken depends on the reliabil-
ity of the test results, the deviation of the properties, and the
error of the testing procedure. The number of samples taken
1
This practice is under the jurisdiction ofASTM Committee D31 on Leather and
may be at the discretion of the user and the related test method
is the direct responsibility of Subcommittee D31.02 on Wet Blue.
and should also be recorded on the test report. It is recom-
Current edition approved June 1, 2016. Published June 2016. Originally
mended that 12 samples be taken for every 50,000 square feet
approved in 2001. Last previous edition approved in 2015 as D6659 – 10(2015).
DOI: 10.1520/D6659-16.
of hide or skin. These 12 shall be considered a lot, or batch.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
NOTE 1—By reason of the high moisture content of Wet Blue and Wet
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 White, samples should be taken after the wringing operation and imme-
the ASTM website. diately sealed in airtight plastic wrap. Store in a cool place until used.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D6659 − 16
6.3 The standard location for sampling Wet Blue and Wet 6.3.2.6 When cutting specimens for physical tests, areas
White is the kidney area (designated as TES
...
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 (Reapproved 2015) D6659 − 16
Standard Practice for
Sampling and Preparation of Wet Blue and Wet White for
1
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 Wet Blue and Wet White 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
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.
1
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 Dec. 1, 2015June 1, 2016. Published December 2015June 2016. Originally approved in 2001. Last previous edition approved in 20102015 as
D6659 – 10.10(2015). DOI: 10.1520/D6659-10R15.10.1520/D6659-16.
2
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 Blue and Wet White 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. (43) Sequential
production batches.
3.1.1.2 Discussion—
In addition to 3.1.1.1, Wet Blue in formed lots should be produced from Chromium tanning material obtained from the same
producer (or functionally equivalent).
3.1.2 unit, n—a piece of wet blue Wet Blue or Wet White 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 Wet Blue
and Wet White for physical and chemical tests. Wet blue is a natural productBlue and Wet White are natural products and as such
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D6659 − 16
isare 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.
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
...
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