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

CERTIFIED REFERENCE MATERIAL
SX37-11
Coke ash

Version: 004      Date of certification: 02.09.11      Sample form: Powder < 0.125 mm

Analyte Unit Certified value Confidence
interval (95%)		 No. of independent
repeated series		 Measuring
method*		 
  CaO
  SiO2
  Fe
  MnO
  P2O5
 
  %
  %
  %
  %
  %
 
     11.60
     43.5
      7.79
      0.189
      0.607
 
      0.02
      0.3
      0.02
      0.001
      0.003
 
 7
 3
 4
 7
 7
 
1
1
1
1
1
 
  SO3
  Al2O3
  MgO
  TiO2
  Na2O
 
  %
  %
  %
  %
  %
 
      0.091
     13.79
      8.69
      2.78
      3.08
 
      0.002
      0.04
      0.02
      0.02
      0.03
 
 6
 7
 6
 7
 5
 
1,2
1
1
1
1,3
 
  K2O
  SrO
  ZrO2
  V2O5
  Cr2O3
 
  %
  %
  %
  %
  %
 
      3.29
      0.103
      0.041
      0.058
      0.036
 
      0.01
      0.001
      0.001
      0.002
      0.003
 
 7
 6
 4
 6
 4
 
1
1
1
1
1
 
  Co3O4
  NiO
  CuO
  ZnO
  C tot.
 
  %
  %
  %
  %
  %
 
      0.007
      0.030
      0.009
      0.010
      0.039
 
      0.001
      0.002
      0.001
      0.001
      0.004
 
 4
 4
 4
 4
 3
 
1
1
1
1
2
 
  CO2
  H2O 900°C
 
  %
  %
 
      0.045
      0.52
 
      0.007
      0.03
 
 3
 4
 
4
5
* Measuring method
1: X-ray fluorescence spectrometry
2: Combustion with IR-detection
3: Atomic absorption spectrometry
4: Digestion by acids, coulometric detection
5: detection with IR-/ UV-absorption after Combustion
 

Comment
Thermal treatment of material before weighing: 105°C, 1 h