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ZSX Primus III+
  • Analysis of elements from O to U
  • Tube above optics minimizes contamination issues
  • Small footprint uses less valuable lab space
  • High precision sample positioning
  • Special optics reduce errors caused by curved sample surfaces
  • Software tools for statistical process control (SPC)
  • Evacuation and vacuum leak rates can be optimized for throughput

Tube-above sequential wavelength dispersive X-Ray fluorescence spectrometer

Elemental analysis of solids, liquids, powders, alloys and thin films

Rigaku ZSX Primus III+ delivers rapid quantitative determination of major and minor atomic elements, from oxygen (O) through uranium (U), in a wide variety of sample types — with minimal standards.

Tube above optics for superior reliability

ZSX Primus III+ features an innovative optics-above configuration. Never again worry about a contaminated beam path or down time due to sample chamber maintenance. The optics-above geometry eliminates cleaning worries and increases up time.

High precision sample positioning

The high precision positioning of the sample ensures that the distance between the sample surface and X-ray tube is kept constant. This is important for applications that require high precision, such as the analysis of alloys. ZSX Primus III+ performs high-precision analysis using a unique optical configuration designed to minimize errors caused by non-flat surfaces in samples such as fused beads and pressed pellets

SQX fundamental parameters with EZ-scan software

EZ-scan allows users to analyze unknown samples without any prior setup. This time saving feature requires only a few clicks of the mouse and a sample name to be entered. Combined with SQX fundamental parameters software, it provides the most accurate and rapid XRF results possible. SQX is capable of automatically correcting for all matrix effects, including line overlaps. SQX can also correct for secondary excitation effect by photoelectrons (light and ultra-light elements), varying atmospheres, impurities and different sample sizes. Increased accuracy is achieved using matching library and perfect scan analysis programs.


Product name ZSX Primus III+
Technique X-ray fluorescence (XRF)
Benefit Elemental analysis of solids, liquids, powders, alloys and thin films
Technology Tube above sequential wavelength dispersive (WDXRF)
Core attributes 3 kW sealed X-ray tube, 48-position autosampler, analyze O to U, vacuum
Core options Additional analyzing crystals
Computer External PC, MS Windows® OS, ZSX software
Core dimensions 1310 (W) x 1480 (H) x 850 (D) mm
Mass Approx. 620 kg (core unit)
Power requirements 1Ø, 200 VAC 50/60 Hz, 7 kW


The following applications are relevant to this product