Abstract
The SRRL Non-Lint Tester, a new machine for determining the non-lint content of lint cotton, was evaluated on more than 1000 lots of cotton representing a wide range of grades, classer's lengths, and fiber properties. Comparison of the results from the Tester with those from the ASTM method that uses the Shirley Analyzer shows a correlation coefficient of 0.90 between the two machines. An analysts of results from both machmes shows that the non-lint content of cotton is affected to a significant degree by grade, classer's length and Micronaire reading. It was found that non-lint content values from the Slurley Analyzer were consistently higher than those from the Tester, and the Tester values for rephcated samples were consistently less variable than those from the Analyzer. Both machines appear to estimate reliably the non-lint content of cotton, with the tester being about 10 times faster.
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