Laboratory accredited by GAZ, (Association for the Accreditation and Certification GmbH) Attestation no. 91021

CERTIFIED REFERENCE MATERIAL
SX11-15
Iron ore

Version: 006      Date of certification: 07.07.06      Sample form: Powder < 0.100 mm

Analyte Unit Certified value Confidence
interval (95%)		 No. of independent
repeated series		 Measuring
method*		 
  CaO
  SiO2
  Fe
  Mn
  P2O5
 
  %
  %
  %
  %
  %
 
      0.494
      5.79
     63.17
      0.074
      0.101
 
      0.008
      0.04
      0.09
      0.002
      0.002
 
 4
 3
 3
 4
 4
 
1
1
1
1
1
 
  Al2O3
  MgO
  TiO2
  Na2O
  K2O
 
  %
  %
  %
  %
  %
 
      2.68
      0.244
      0.128
      0.020
      0.008
 
      0.03
      0.006
      0.003
      0.001
      0.002
 
 3
 4
 4
 3
 7
 
1
1
1
2
1,2
 
  V2O5
  Cr2O3
 
  %
  %
 
      0.010
      0.005
 
      0.001
      0.001
 
 4
 4
 
1
1
* Measuring method
1: X-ray fluorescence spectrometry
2: Atomic absorption spectrometry

Comment
Thermal treatment of material before weighing: 900°C, 1 h