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may determine which grade the fleece will be put into, this subjective assessment is not always reliable, and processors prefer that wools are measured objectively by qualified laboratories. Some of the superfine wool growers do in-shed wool testing, but this can only be used as a guide. This enables wool classers to place wool into lines of a consistent quality. A shed hand, known as a wool presser, places the wool into approved wool packs in a wool press to produce a bale of wool that must meet regulations concerning its fastenings, length, weight, and branding if it is to be sold at auction in
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forming the bulk of the yield is placed with other fleece wool as the main line, while other pieces such as the neck, belly, and skirting (inferior wool from edges) are sold for such purposes where the shorter wools are required (for example fillings, carpets, insulation). While in some places, crimp
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in light shades. Color may be graded depending upon the natural color, impurities, and various stains present. Severely stained wool decreases prices dramatically. However, it is hard to assess color accurately without proper measurement, since some stains will wash out in the processing, whereas
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A classer is also responsible for a pre-shearing check to be made to ensure that the wool and sheep areas are free of possible contaminants. A classer supervises shed staff during shearing, and trains any inexperienced hands. At the end of shearing, classers have to provide full documentation
231:"Blood" or "Blood system" was one of the old ways to grade wool. It was a term that was used with different fractions to show how much merino blood a sheep has. Each blood grade corresponds to a numerical grading system based on the yarn's fineness or count.
88:: Shedding breeds will increase the risk of medullated or pigmented fibers. Any sheep likely to have dark fibers should be shorn last to avoid contamination. The age of the sheep will have a bearing on the diameter and value of the fibers of wool, too.
152:). Before the advent of technology to measure crimps and diameter, English wool-handlers categorized wool based on their fineness by estimating spinning capacity using vision and touch, which is known as the
219:. All Merino fleece wool sold at auction in Australia is objectively measured for fiber diameter, yield (including the amount of vegetable matter), staple length, staple strength, and sometimes color.
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and other sturdy products. The unit of measurement is crimps per inch or crimps per centimeter. The average diameter or mean fiber diameter is measured in micrometers (
71:, carried out by examining the characteristics of the wool in its raw state and classing (grading) it accordingly. Wool classing is done by a wool classer.
168:): Determines the wool's ability to withstand processing. Weaker wool produces more waste in carding and spinning, and may be used for the production of
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is skirted to remove excess fibres, seeds, burrs, etc. to leave the fleece as reasonably even as possible. The wool taken from different parts of a
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136:, with great lengths of yarn for a given weight of wool, and higher market value. Fine fibers may be utilized in the production of fine
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have many bends and usually have a small diameter. Such fibers can be spun into fine
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Throwing a freshly shorn fleece onto a wool table for skirting and classing.
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Australian Wool
Corporation; Australian Council of Wool Exporters (1989).
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Code of practice for the preparation of
Australian wool clips, July 1989
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348:. Internet Archive. Englewood Cliffs, N.J., Prentice-Hall. p. 133.
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Some of the qualities a wool classer examines when classing wool are:
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Examination of the characteristics of the wool in its raw state
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whereas the coarser fibers may be used for the manufacture of
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is the production of uniform, predictable, low-risk lines of
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by the
National Wool Growers Association, of Southafrica
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Wool classing room, Queensland, Australia, circa 1926
365:. U.S. Department of Agriculture. p. 11.
318:"The Mysteries of Bradford and Micron Counts"
265:Wool-sorter's disease, a historical name for
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108:: Must be removed from fleeces and broken.
291:. Melbourne: Australian Wool Corporation.
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94:: Ensure that all rules are followed.
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342:American Fabrics Magazine (1960).
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180:: Indicates whether wool can be
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359:Christie, James Wiley (1945).
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227:Other systems of wool grading
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387:Animal husbandry occupations
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345:AF encyclopedia of textiles
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305:Wool Classification Manual
75:Basis for classification
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217:Australasia
59: 1900
382:Sheep wool
376:Categories
328:2017-09-23
273:References
256:Wool bale
198:Procedure
52:Australia
235:See also
160:Strength
138:garments
267:anthrax
150:microns
18:Classed
212:fleece
204:fleece
146:carpet
126:Fibers
112:Stains
106:shanks
98:Brands
208:sheep
177:Color
142:suits
134:yarns
130:crimp
251:Wool
202:The
182:dyed
170:felt
104:and
69:wool
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297:^
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