The Betalyser is a computerized laboratory system for the quality control and analysis of sugar beet according to official ICUMSA methods. The sugar content estimated by polarimetric measurements is not clear evidence for the sugar yield, since molasses-forming beet ingredients like potassium, sodium and a-amino nitrogen have to be considered. Sugar factories can use the Betalyser and a bonus system in their payment analysis to improve the quality of the delivered sugar beet and thus increase their economic turnover within a few years.