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United States Department of Agriculture

Agricultural Research Service

Research Project: New and Improved Assessments of Cotton Quality

Location: Cotton Structure and Quality Research

Title: Comparisons of cotton maturity and fineness measurements (Cottonscope, AFIS, HVI™)

Authors
item Rodgers, James
item Delhom, Christopher
item Cui, Xiaoliang

Submitted to: National Cotton Council Beltwide Cotton Conference
Publication Type: Proceedings
Publication Acceptance Date: January 23, 2014
Publication Date: April 14, 2014
Citation: Rodgers III, J.E., Delhom, C.D., Cui, X. 2014. Comparisons of cotton maturity and fineness measurements (Cottonscope, AFIS, HVI™). National Cotton Council Beltwide Cotton Conference,January 6-8, 2014, New Orleans, Louisiana.p. 963-967.

Technical Abstract: The Cottonscope, a new instrument for fiber maturity (MR) and fineness, utilizes polarized light microscopy and image analysis to measure longitudinal, weighted fiber snippets in water. Interest has been expressed by the Commercial Standardization of Instrument Testing of Cotton (CSITC) on the potential of using the Cottonscope in CSITC round trials and in its potential use as a secondary reference method. Preliminary CSITC comparative analyses were performed on a set of diverse cotton samples. The AFIS maturity and fineness, HVI™ maturity, and Cottonscope maturity (MR) and fineness results were compared. In addition, MR and fineness results were inserted into the Lord’s equation to obtain calculated micronaire results for each instrument, and the calculated micronaire was compared to HVI™ micronaire for each sample. Overall, good instrument trend agreement was observed between the MR and fineness results. For calculated micronaire, the best method agreement to HVI™ micronaire was obtained with the Cottonscope instrument. As observed in previous evaluations, the AFIS results were less responsive to changes in MR, fineness, and calculated micronaire compared to the Cottonscope. The development of improved fiber standards for the Cottonscope was evaluated.

Last Modified: 12/19/2014
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