The instrument is utilized to decide the whole sulfur substance by bright fluorescence method. It improves the capacity of anti-jamming and avoids the complicated operation of titration pool and components of insecurity which utilized Coulometry. - The instrument is used to determine the total sulfur content by ultraviolet fluorescence method. It Improves the ability of anti-jamming and avoids the complicated operation of titration pool and factors of instability which used Coulometry. So the sensitivity of the instrument is greatly improved. The data collecting, processing, storage and printing are fully controlled by computer.