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

CERTIFIED REFERENCE MATERIAL
SX11-35
Iron ore

Version: 001      Date of certification: 12.07.06      Sample form: Powder < 0.100 mm

Analyte Unit Certified value Confidence
interval (95%)		 No. of independent
repeated series		 Measuring
method*		 
  CaO
  SiO2
  Fe
  FeO
  Mn
 
  %
  %
  %
  %
  %
 
      0.011
      0.696
     64.69
      0.06
      1.520
 
      0.001
      0.008
      0.08
      0.01
      0.003
 
 4
 4
 4
 3
 4
 
1
1
1
2
1
 
  P2O5
  S
  Al2O3
  MgO
  TiO2
 
  %
  %
  %
  %
  %
 
      0.140
      0.006
      1.49
      0.033
      0.052
 
      0.002
      0.001
      0.01
    < 0.001
      0.002
 
 4
 3
 4
 5
 4
 
1
3
1
4
1
 
  K2O
  C tot.
  CO2
  H2O 900°C
 
  %
  %
  %
  %
 
      0.016
      0.069
      0.007
      2.31
 
      0.001
      0.002
      0.001
      0.10
 
 4
 3
 3
 3
 
1
3
5
6
* Measuring method
1: X-ray fluorescence spectrometry
2: Titrimetry
3: Combustion with IR-detection
4: Atomic absorption spectrometry
5: Digestion by acids, coulometric detection
6: Combustion with detection with IR-/ UV-absorption

Comment
Thermal treatment of material before weighing: 105°C, 4 h