ASTM D1334-05(2009)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D1334 − 05 (Reapproved 2009)
Standard Test Method for
Wool Content of Raw Wool—Commercial Scale
This standard is issued under the fixed designation D1334; 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 D1113 Test Method for Vegetable Matter and Other Alkali-
Insoluble Impurities in Scoured Wool
1.1 This test method covers the determination of the wool
D2720 Practice for Calculation of Commercial Weight and
base content and the clean wool fiber present in a lot of raw
Yield of Scoured Wool, Top, and Noil for Various Com-
wool by commercial-scale scouring of the lot followed by
mercial Compositions
laboratory tests on samples of the scoured wool.
D4845 Terminology Relating to Wool
NOTE 1—The sampling of lots of raw wool in packages is covered in
Practice D1060, and the determination of the wool content of such
3. Terminology
samples is covered in Test Method D584. The determination of vegetable
matter and other alkali-insoluble impurities in scoured wool is covered in
3.1 For all terminology related to wool and wool felt, refer
Test Method D1113. For factors for the conversion of wool base content
to Terminology D4845.
to its equivalent in terms of scoured wool, top, or noil of various
3.1.1 The following terms are relevant to this standard:
commercially specified compositions, refer to Practice D2720.
clean wool fiber present, other alkali-insoluble impurities,
NOTE 2—The values stated in U.S. Customary Units are to be regarded
oven-dried, raw wool, vegetable matter base, vegetable matter
as the standard because of common commercial practice. The S.I. units in
parentheses are provided for information only.
present, wool base.
NOTE 3—Because of trade practice the term “weight” is used in this test
3.2 For all other terminology related to textiles, refer to
method instead of the technically correct term “mass”.
Terminology D123.
1.2 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical
4. Summary of Test Method
conversions to SI units that are provided for information only
4.1 The entire lot of raw wool is weighed, prepared,
and are not considered standard.
scoured, and dried in the usual commercial equipment, with
1.3 This standard does not purport to address all of the
special precautions against loss of wool at any stage of the
safety concerns, if any, associated with its use. It is the
operations. The commercially dried scoured wool is weighed,
responsibility of the user of this standard to establish appro-
then sampled for laboratory determination of its oven-dried
priate safety and health practices and determine the applica-
weight (mass) and its content of alcohol-extractable matter,
bility of regulatory limitations prior to use.
mineral matter, vegetable-matter base, and other alkali-
insoluble impurities.The wool base content and the clean wool
2. Referenced Documents
fiber present are calculated as percentages of the net weight
2.1 ASTM Standards:
(mass) of the lot of raw wool.
D123 Terminology Relating to Textiles
D584 Test Method for Wool Content of Raw Wool—
5. Significance and Use
Laboratory Scale
5.1 This test method is considered satisfactory for use as a
D1060 PracticeforCoreSamplingofRawWoolinPackages
referee method for the determination of the wool base content
for Determination of Percentage of Clean Wool Fiber
and the clean wool fiber present in a lot of raw wool. If there
Present
are differences of practical significance between reported test
results for two laboratories (or more), comparative test should
be performed to determine if there is a statistical bias between
This test method is under the jurisdiction ofASTM Committee D13 on Textiles
them, using competent statistical assistance. As a minimum,
and is the direct responsibility of Subcommittee D13.13 on Wool and Felt.
use the samples for such a comparative test that are as
Current edition approved July 1, 2009. Published January 2010. Originally
homogenous as possible, drawn from the same lot of material
approved in 1954. Last previous edition approved in 2005 as D1334 – 05. DOI:
10.1520/D1334-05R09.
as the samples that resulted in the disparate results during the
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
initial testing and randomly assigned in equal numbers to each
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
laboratory. The test results from the laboratories involved
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. should be compared using a statistical test for unpaired data,
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D1334 − 05 (2009)
probability level chosen prior to the testing series. If bias is 10.3 Opening and Dusting—If the use of a wool opener or
found, either its cause must be found and corrected, or future duster is required prior to scouring, recover all wool wastes
results for that material be adjusted in consideration of the from these operations for treatment as directed in 10.5.
known bias.
10.4 Treatment of Grades and Sorts—Separately treat each
5.2 This test method is also used in studies aimed at
grade and sort as follows:
deriving suitable formulas for estimating the allowances to be
10.4.1 Scouring—Using Scouring Solution A in the first
made for wool unavoidably lost or destroyed in such commer-
bowl and Scouring Solution B in the second bowl, both at 526
cial operations as carding, combing, or carbonizing.
3°C, scour and rinse by the usual commercial procedure. Make
surethattheequipmentisfreeofwoolbothbeforeandafterthe
6. Apparatus
scouring and that all wool wastes are recovered.
6.1 Wool Opener, Scouring Bowl Train, Dryer—Usual com- 10.4.2 Drying—Dry the scoured wool at the temperature
and under the operating conditions customary with the equip-
mercial equipment, with accessories, modified, if necessary, to
prevent loss of any significant quantity of wool. ment being used and the type of wool involved. Make sure that
the equipment is free of wool both before and after the drying
6.2 Laboratory Apparatus, for the determination of oven-
and that all wool wastes are recovered. Store the dried wool,
dried weight (mass), alcohol-extractable matter, mineral
either in bulk form or packaged, for at least 24 h, preferably in
matter, and total alkali-insoluble impurities, as described in
a space having an atmosphere not subject to large variations in
Test Methods D584 and D1113.
temperature or humidity during that period.
6.3 Scales, accurate to 1 lb (0.5 kg), for weighing the raw
10.4.3 Weighing—Determine to the nearest 1 lb (0.5 kg) the
wool and the scoured product.
net weight (mass) of the scoured wool in each package, or
other unit, after storage for 24 h (10.4.2).
7. Reagents
10.4.4 Sampling—Duringorimmediatelyaftertheweighing
7.1 Scouring Solution A—A solution containing approxi-
(10.4.3) select a sample for the laboratory determination of
mately0.3 %byweight(mass)ofsodaash(Na CO ),0.1 %by
oven-dried
...