[1] Since 1991, USDA cotton classification has applied an instrument-based classing process using the so-called High Volume Instrument (HVI) by Uster Technologies.
[2][3] In order to improve objectivity, cotton classing has largely moved from human senses (visual checks by certified classers) to high-volume, precision instruments that measure different parameters in a matter of seconds.
The first body to systematically conduct instrument-based classing was the United States Department of Agriculture (USDA), running a series of air-conditioned classification offices where the entire cotton crop is sampled and classified.
Other countries running similar classification organizations include China, Australia, Uzbekistan, Brazil and Greece.
Long-staple fibers contribute to better spinnability and strength, delivering regular yarns of superior quality.