How Many Cleaning Passes Does Seed Cotton Profit From? The Pass at Which Lint Value Stops Rising

Every cleaning stage in a gin removes trash, and every stage also removes or damages some of the lint it is cleaning. The trade is invisible in a single pass and decisive across several, yet small gins commonly run whatever number of cleaners the line was built with, in whatever order they were installed, as if the count itself had no economics. This paper gives the count an economics. Starting from a stated trash content, it applies stated per-pass removal, lint loss, and staple damage figures, prices the resulting lint with a stated grade relation, and finds the number of passes at which the value of a tonne of seed cotton stops rising and begins to fall. In the computed results, the best passes is 3; the best value usd is 609.81; the best trash pct is 1.46; the best lint kg is 343; the zero pass value usd is 556.11. Add cleaning stages only while the grade gain on the lint that survives exceeds the value of the lint the stage removes. The study is simulated, not measured; all inputs are stated assumptions, printed in the accompanying computation, which readers may replace with their own values and re-run.