This project has tackled the scientific challenge of predicting the key parameters of interest to the spinning mill manager from fibre quality measurements. The output of the project is a user friendly software package that can be used by spinners to predict the effects on their production of using higher (or lower) quality cotton. The software is potentially an important tool for marketing high quality Australian cotton fibre. For example, it could be used to illustrate quantitatively to a spinner the technical benefits of utilising a new variety of finer, longer cotton, e.g. Sicala 340BRF.