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

CERTIFIED REFERENCE MATERIAL
SX26-12
Refractories

Version: 004      Date of certification: 06.06.08      Sample form: Powder < 0.125 mm

Analyte Unit Certified value Confidence
interval (95%)		 No. of independent
repeated series		 Measuring
method*		 
  CaO
  SiO2
  Fe2O3
  Mn3O4
  P2O5
 
  %
  %
  %
  %
  %
 
      1.80
     40.80
      3.10
      0.135
      0.279
 
      0.04
      0.11
      0.01
      0.001
      0.008
 
 3
 3
 3
 3
 3
 
1
1
1
1
1
 
  Al2O3
  MgO
  TiO2
  Na2O
  K2O
 
  %
  %
  %
  %
  %
 
     36.45
     13.13
      1.25
      0.242
      0.759
 
      0.09
      0.06
      0.03
      0.007
      0.004
 
 3
 3
 3
 4
 3
 
1
1
1
2
1
 
  ZrO2
  V2O5
  Cr2O3
  NiO
  CO2
 
  %
  %
  %
  %
  %
 
      0.163
      0.027
      0.385
      0.032
      0.54
 
      0.003
      0.003
      0.014
      0.002
      0.05
 
 3
 3
 3
 3
 3
 
1
1
1
1
3
 
  C tot.
  H2O 900°C
 
  %
  %
 
      0.437
      0.75
 
      0.006
      0.03
 
 3
 3
 
4,5
6
* Measuring method
1: X-ray fluorescence spectrometry
2: Atomic absorption spectrometry
3: Digestion by acids, coulometric detection
4: Combustion with IR-detection
5: Combustion with coulometric detection
6: detection with IR-/ UV-absorption after Combustion

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