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The Blood System links grades to Merino/Rambouillet blood fractions, the Count System relates “hanks” per pound, and the Micron System uses measured fiber diameter for accurate 16-grade classification.",{"@graph":14,"@context":76},[15,34,55],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/research-report/","Research & 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systems developed beyond simple “coarse” and “fine” categories?","Question",{"text":62,"@type":63},"Because wool differences depend not only on whether it is coarse or fine, but also on sheep breed and variations across parts of the same fleece.","Answer",{"name":65,"@type":60,"acceptedAnswer":66},"What does the Blood System base wool grades on?",{"text":67,"@type":63},"It is based on sheep breeding and bloodline fractions, dividing wool into six grades such as fine (Merino/Rambouillet), half-blood, and other intermediate levels.",{"name":69,"@type":60,"acceptedAnswer":70},"How does the Count System define wool grades?",{"text":71,"@type":63},"It uses the yarn-count concept: the number of hanks of yarn that can be spun from one pound of wool top, where higher counts correspond to finer wool.",{"name":73,"@type":60,"acceptedAnswer":74},"Why is the Micron System considered the most technical and accurate method?",{"text":75,"@type":63},"It classifies wool into 16 grades according to 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coarse or fineyarns—the wool fiber diameter determining whether it wouldbe coarse or fine.However,more than the terms “coarse”or\"fine\"were needed to describe the difference between woolfrom the different breeds of sheep,or the wool from thedifferent parts of the same fleece.So,over the years,threegrading systems evolved to describe wool for manufacturingand sales.They are the Blood System,the Count System,andthe Micron System.  \n\n| Top  \u003Cbr>Wool   | Old  \u003Cbr>Blood  \u003Cbr>Grade   | Standard Specifications   |  |  |\n| --- | --- | --- | --- | --- |\n|  |  | USDA  \u003Cbr>Grade   | Range for  \u003Cbr>Average Fiber  \u003Cbr>Diameter   | Standard  \u003Cbr>Deviation  \u003Cbr>Maximum   |\n| Fine  \u003Cbr>Fine  \u003Cbr>Fine  \u003Cbr>in   | Fine  \u003Cbr>ing  \u003Cbr>Fine  \u003Cbr>Fine   | Finer than 80's  \u003Cbr>80's  \u003Cbr>70's  \u003Cbr>64's   | (microns)  \u003Cbr>Under 17.70  \u003Cbr>17.70-19.14  \u003Cbr>19.15-20.59  \u003Cbr>20.60-22.04   | (microns)  \u003Cbr>3.59  \u003Cbr>4.09  \u003Cbr>4.59  \u003Cbr>5.19   |\n| Medium  \u003Cbr>Medium  \u003Cbr>Medium  \u003Cbr>Medium  \u003Cbr>Medium  \u003Cbr>Medium   | K Blood  \u003Cbr>W Blood  \u003Cbr>%Blood  \u003Cbr>%Blood  \u003Cbr>X Blood  \u003Cbr>X Blood   | 62's  \u003Cbr>60's  \u003Cbr>58's  \u003Cbr>56's  \u003Cbr>54's  \u003Cbr>50's   | 22.05-23.49  \u003Cbr>23.50-24.94  \u003Cbr>24.95-26.39  \u003Cbr>26.40-27.84  \u003Cbr>27.85-29.29  \u003Cbr>29.30-30.99   | 5.89  \u003Cbr>6.49  \u003Cbr>7.09  \u003Cbr>7.59  \u003Cbr>8.19  \u003Cbr>8.69   |\n| Coarse  \u003Cbr>Coarse  \u003Cbr>Coarse   | Low4  \u003Cbr>Low%  \u003Cbr>Common   | 48's  \u003Cbr>46's  \u003Cbr>44's   | 31.00-32.69  \u003Cbr>32.70-34.39  \u003Cbr>34.40-36.19   | 9.09  \u003Cbr>9.59  \u003Cbr>10.09   |\n| Very Coarse  \u003Cbr>Very Coarse  \u003Cbr>Very Coarse   | Braid  \u003Cbr>Braid  \u003Cbr>Braid   | 40's  \u003Cbr>36's  \u003Cbr>Coarser than 36's   | 36.20-38.09  \u003Cbr>38.10-40.20  \u003Cbr>Over 40.20   | 10.69  \u003Cbr>11.19  \u003Cbr>一   |\n\nThe Blood System is the oldest system,originating at the timeof the early American colonies.It is based on the bloodlineor breeding of the sheep,and is divided into six grades.TheMerino or Rambouillet wool is called fine.A half-blood woolcomes from sheep that are half Merino or Rambouillet andhalf another breed.Wool types grown on sheep with fractional  \n(ASTM)American Society for Testing and Materials Designation D3991  \nGrades of wool by sheep common in the U.S.  \n\n| Delaine-Me   | rino   |  |  |  |  |  |  |  |  |  |  |  |  |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n| Debouillet   |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  | Rambouille   | t   |  |  |  |  |  |  |  |  |  |  |  |\n|  |  | Targhee   |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  | Columbia   |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  | Coriedale   |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  | Finsheep   |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  | Montadale   |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  | Dorset   |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  | Cheviot   |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  | Southdown   |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  | Shropshire   |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  | Hampshire   |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  | Suffolk   |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  | Oxford   |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  | Romney   |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  | Border Leic   | ester   |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  | Lincoln   |  |  |  |","cbCaipmB2jex3QQC","https://ap.wps.com/l/cbCaipmB2jex3QQC","pdf",3811484,"English","# Comparing wool grades\n## Blood System\n## Count System\n## Micron System","[{\"question\":\"Why were multiple wool grading systems developed beyond simple “coarse” and “fine” categories?\",\"answer\":\"Because wool differences depend not only on whether it is coarse or fine, but also on sheep breed and variations across parts of the same fleece.\"},{\"question\":\"What does the Blood System base wool grades on?\",\"answer\":\"It is based on sheep breeding and bloodline fractions, dividing wool into six grades such as fine (Merino/Rambouillet), half-blood, and other intermediate levels.\"},{\"question\":\"How does the Count System define wool grades?\",\"answer\":\"It uses the yarn-count concept: the number of hanks of yarn that can be spun from one pound of wool top, where higher counts correspond to finer wool.\"},{\"question\":\"Why is the Micron System considered the most technical and accurate method?\",\"answer\":\"It classifies wool into 16 grades according to average fiber diameter measured by a micrometer, and very small micron differences define adjacent grades.\"}]","Wool Grades and the Sheep that Grow the Wool - Comparing wool grades | PDF",1792704478,23]