The success of XRF analysis depends on the quality of the calibration standards used. Finding high quality standards in the required analytical range is not only challenging but also expensive.

WROXI – CRM is a synthetic, high quality Certified Reference Materials (CRM) kit that covers a wide range of oxide materials such as ores, rocks, and geological materials. It is commonly used in mining, raw materials (cement, steel, metal), slags, service laboratories, R&D facilities, geological surveys, and has a dual purpose: either for primary fusion glass disk calibration or to develop secondary pressed powder calibrations.

Why use WROXI – CRM?

130x117-WROXI-image-5.jpg WROXI was developed by our XRF experts to solve the problem of finding suitable calibration material for WD and ED-XRF. It is the solution to the limited availability and elemental ranges of RM/CRMs from natural materials. Being synthetic, WROXI standards will be available forever, and that means there is no risk of the requested CRM being sold out or otherwise unavailable. The kit is shipped with monitors and templates suitable for the Axios-mAX, Zetium and Epsilon 4 spectrometers. The methods and fusion recipes are provided for each Malvern Panalytical fusion instrument. Borate flux and additives, instructions on use, and full SDS are also part of the kit.

Guaranteed traceability

WROXI-CRM is manufactured under ISO 17034 accreditation which means the traceability is guaranteed. The synthetic CRMs are traceable to pure compounds and are shipped with certificates stating certified values and their uncertainties. 

Need to extend your WROXI oxides coverage? 

Our specialized team of CRM manufacturing experts can prepare synthetic CRMs for you based on your needs.

45 possible additional elements!

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WROXI CRM value to XRF analysis: 

  • Traceability guaranteed (ISO 17034)
  • Forever available: synthetic standards
  • Extendable

Examples of material that can be analyzed:    

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  • Limestones 
  • Iron/manganese ores
  • Bauxite
  • Clays/shales
  • Rocks
  • Minerals
  • Phosphates
  • Feldspars
  • Blast furnace slags
  • Fly ash
  • Gypsum
  • Soils


Why Fusion? 

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The standards are fused to remove mineralogical and particle size effects. Fused samples are ‘perfect’ samples, and in combination with the Fundamental Parameters (FP) matrix correction model enable very wide concentration ranges in a single calibration. Fusion is ideal for accurate analysis of light element as these are typically most affected by particle size and mineralogical effects. For more information about sample preparation by fusion, visit this page.

WROXI-CRM Base 

Flux bottle and hand with spoon.jpg The standards are delivered as powders which can be prepared on-site as fused beads using the included Lithium borate flux. The Base set can be complemented with several pre-defined or bespoke extension sets.

The Base set provides 15 multi-element standards for the analysis of the 11 most common oxides in a variety of materials such as ores, minerals, slags and geological materials and is shipped with monitors and templates suitable for the Axios-mAX, Zetium or Epsilon 4 spectrometers.

Oxide Coverage and their concentration ranges (wt%):
Na2O0-50
MgO0-80
Al2O30-80
SiO20-90
P2O50-50
SO30-59
K2O0-40
CaO0-80
TiO20-80
Mn3O40-80
Fe2O30-80

Compatibility

Product nameCompatibilityPart number
WROXI-CRM Base WDZetium, Axios-mAX943 0043 63011
WROXI-CRM Base EDEpsilon 4943 0043 63021

WROXI-CRM Pro Extension 

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WROXI-Pro Extension is an add-on to the WROXI Base set of CRMs. This extension set provides 12 multi-element standards for the analysis of 10 additional oxides in a variety of materials such as ores, minerals, slags and geological material. It is shipped with monitors and templates suitable for the Zetium and Axios-mAX spectrometers.

Oxide Coverage and their concentration ranges (wt%):
V2O50-10
Cr2O30-10
NiO0-10
CuO0-10
ZnO0-10
SrO0-40
ZrO20-40
BaO0-40
HfO20-10
PbO0-10

Compatibility

Product nameCompatibilityPart number
WROXI-CRM Pro Extension for WD XRFZetium, Axios-mAX943 0043 63031

Ensuring traceability all along the analytical chain

The traceability can be ensured all along the analytical chain by combining the data security audit trailing on our spectrometer, the sample monitoring options on our sample preparation equipment and the CRMs produced with metrological traceability. 

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