Fineness and maturity are highly correlated within the same cotton variety. Fiber fineness affects yarn appearance, yarn uniformity, and yarn strength. Trash - The trash measurement is made by a video trashmeter, which measures the percentage area of trash on the sample surface. This measurement provides an estimate of the total amount of trash in the bale. Color - Color measurements are made by a colorimeter.
Color gives an indication of the fibers' ability to accept dyes in the manufacturing process.
Purchases of cotton from farmers are made on the basis of this classification, which is referred to in the cotton trade as the Smith-Doxey Class. All fee classing services provide for one review classification. The system contains classing data for the current and previous crop years. This system is also capable of issuing printed Form R Memoranda to firms requesting this service. The current cost for telecommunicated data from the central database is five cents per bale.