OREAS 733

OREAS 733 is a certified reference material produced from high-grade bauxite ore. The ore is typical of lateritic bauxite deposits and has been characterised using the following methods:

  • Bauxite suite by fusion with XRF, including Loss on Ignition (LOI) at 1000 °C
  • Borate/peroxide fusion with ICP-OES & ICP-MS finishes
  • Available Alumina and Reactive Silica by 145 °C BOMB digestion with appropriate instrumental or classical finishes
  • Total Organic Carbon by infrared combustion furnace

Certified values for applicable analytes are operationally defined for each method, with results included under OREAS ISO 17034 scope of accreditation.

Note: Analyte values are indicative only and may change when certified.

						

										

						
							

								Analyte
								
									
										Indicative Value									
								
								1SD
								Expanded Uncertainty Low
								Expanded Uncertainty High
								Method
							

						
						
															

									Al2O3, Aluminium(III) oxide (wt.%)
									53.28
									TBD
									TBD
									TBD
									Borate Fusion XRF
								

															

									Fe2O3, Iron(III) oxide (wt.%)
									8.77
									TBD
									TBD
									TBD
									Borate Fusion XRF
								

															

									SiO2, Silicon dioxide (wt.%)
									10.04
									TBD
									TBD
									TBD
									Borate Fusion XRF
								

															

									TiO2, Titanium dioxide (wt.%)
									2.87
									TBD
									TBD
									TBD
									Borate Fusion XRF
								

															

									CaO, Calcium oxide (wt.%)
									0.120
									TBD
									TBD
									TBD
									Borate Fusion XRF
								

															

									Na2O, Sodium oxide (wt.%)
									0.330
									TBD
									TBD
									TBD
									Borate Fusion XRF
								

													
					

				


				


									
Downloads

											Certificate
					
											DataPack
					SDS NRAM (226 KB)				

					

													
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Specifications