the problems of prod. e quality, especilly the colour of white sagar. ace prominent in sugar factories in China because of the present low dliciency of clarification and decolorization in the sulphitation process. Similar problems also occur in factories with car bonatation. The colour of white sugar may be either from inlusions inside the rytals or n the sugar surface. Thus it is necessary to remove the impurities both in the inclusions and on the surface as much as possible. As a preventive measure, it is desirable to reduee colour in the juice and raw syrup. To improve charification. a new clarificant, G409, has been developed. It can be used both in mixed juice clacitication and in syrup flotation creacmcnt after elther suiphltation or caronatation. The improved syrup flotation with G409 and H3PO4 has been applied in a number of factories using sulphitation and carbonatation in Guangdong and Fujia Provinces. The results indicate that the quality of white sugar can be improved effectively and economically.