- For other uses, see Micron (disambiguation) - .
A micron (micrometre) is the measurement used to denote the diameter of the wool fibers. Fine wool fibers have low micron values. The fiber diameter is the most important characteristic of wool in determining its value.
Each fleece is made up of a wide variety of fiber diameters - eg typical Merino feathers will contain fibers as low as 10 microns in diameter, and there may be fibers with diameters exceeding 25 microns, depending on the age and health (or nutrition) of the sheep. What is commonly referred to as "micron" wool is the mean of the fiber diameter or the mean diameter. It can be measured in several different ways.
Small samples can be taken from sides or fleece and measured using portable instruments such as OFDA2000 (Optical Fiber Diameter Analyzer); or a mobile instrument system called Fleececan. Both of these systems have been studied extensively and if used correctly, they must provide reasonably reliable results. Pre-test results of micron grouping of wool is a useful guide to the class in determining the wool line to be made. Fur samples can also be shaved from animals and sent to the laboratory for measurements ("midside sampling"). Most modern feather testing laboratories use instruments related to the mentioned - either OFDA or Laserscan models. Merino stud stud is a side sample and test results are displayed in the sales catalog.
After the sweatshirt is released and put up for sale as a lot, they are usually sampled by coring at the broker's store and the sample is sent to a certification laboratory. Here core samples are cleaned, dried and prepared for measurement under rigorous testing methods. Merino wool is usually measured on Laserscan instruments in Australia, New Zealand and South Africa, although OFDA instruments can also be used in some cases (the results of these two types of instruments are quite similar). "Coefficient of fiber diameter variation" (CVD) is a measure of variation in the fineness of the fibers in the sample feathers, relative to the mean fiber diameter. Crossbred and coarse wool are often measured for average fiber diameter by older instruments - "Airflow" in many parts of the world, and even projection microscopes in some cases.
Wool handkerchiefs and hogget are finer and generally more valuable than wool from older sheep. Most wool between 11.5 and 24 microns in fiber diameter is made into clothing. The rest is used for other textiles such as blankets, insulation, and furniture.
The best ever wool bale was sold for a seasonal record of 269,000 cents per month in June 2008. The bale was manufactured by Hillcreston Pinehill Partnership and measured 11.6 microns, 72.1% yielded and had 43 Newtons per kilotex power measurement. Bale realized $ 247,480 and was exported to India.
In 2010 ultra fine feather, 10 microns feather, from Windradeen, near Pyramul, New South Wales set a new world record in the fineness of wool fur when winning the Ermenegildo Zegna Vellus Aureum International Trophy.
Video Wool measurement
See also
- Number S (wool)
- Number of spins
- Staple (wool)
- Wool
- Wool Grouping
Maps Wool measurement
References
External links
- Australian Wool Testing Authority - Results & amp; Test diameter
Source of the article : Wikipedia
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