FX-700 Mk2 determines total sulfur in ultra low sulfur (ULS) fuels using wavelength dispersive X-ray fluorescence (WDXRF) method, which is a quick, easy and economical technique. Thanks to its dedicated design for ULS, the operation has been simplified to the extreme. With 8.4-inch Full-color Touch Panel, operation can be made easily and intuitively, and robust interlock mechanism ensures safety against X-ray.