As a tube-above sequential wavelength dispersive X-ray fluorescence (WDXRF) spectrometer, the Rigaku ZSX PrimusIV delivers rapid quantitative determination of major and minor atomic elements, from beryllium (Be) through uranium (U), in a wide variety of sample types — with minimal. As a tube-above sequential wavelength dispersive X-ray fluorescence (WDXRF) spectrometer, the Rigaku ZSX PrimusIV delivers rapid quantitative determination of major and minor atomic elements, from beryllium (Be) through uranium (U), in a wide variety of sample types — with minimal. As a tube-above sequential wavelength dispersive X-ray fluorescence (WDXRF) spectrometer, the Rigaku ZSX PrimusIV delivers rapid quantitative determination of major and minor atomic elements, from beryllium (Be) through uranium (U), in a wide variety of sample types — with minimal standards. ZSX Primus IV features an innovative optics-above configuration. Providing superior performance with the flexibility for analyzing the most complex samples, the ZSX Primus IV spectrometer features a 30-micron tube, the thinnest end-window tube available in the industry, for exceptional light. The ZSX Primus IV XRF spectrometer is a high power (4kW) sequential WDXRF instrument that combines high-throughput with industry-leading light element sensitivity and resolution. Rigaku's unique tube-above optical configuration virtually eliminates the possibility of debris being deposited on the. The tube-below high-performance model enables uncompromised analysis of samples such as liquids, alloys, and plated metals. Combined with the most advanced. Rigaku ZSX Primus III NEXT delivers rapid elemental industrial quality control by quantitative determination of major and minor elements from Be through Cm for powder and solid samples. This new scanning wavelength dispersive X-ray fluorescence spectrometer features Rigaku's unique X-ray tube-above.