the sucrose will be converted to fructose and glucose in high acidity medium effect to the factory recovery. Therefore, the pH value should be control at a suitable value (pH ~ 6.0) and also keep stable during storage time. Hence, the sugarcane factories may think of closed tanks which are air-free, and also use good material for preventing to expose iron to clarified syrup. PVC tanks are recommended in this case which are free from annual maintenance and are more durable.