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

CERTIFIED REFERENCE MATERIAL
SX02-12
Cement

Version: 002      Date of certification: 09.10.07      Sample form: Powder < 0.100 mm

Analyte Unit Certified value Confidence
interval (95%)		 No. of independent
repeated series		 Measuring
method*		 
  Ca
  SiO2
  Fe2O3
  Mn3O4
  P2O5
 
  %
  %
  %
  %
  %
 
     46.48
     21.16
      3.94
      0.062
      0.191
 
      0.07
      0.06
      0.02
      0.001
      0.002
 
 3
 3
 4
 4
 4
 
1
1
1
1
1
 
  S
  Al2O3
  MgO
  TiO2
  Na2O
 
  %
  %
  %
  %
  %
 
      1.18
      4.41
      0.945
      0.242
      0.084
 
      0.02
      0.02
      0.005
      0.001
      0.002
 
 4
 3
 4
 4
 3
 
1
1
1
1
2
 
  K2O
  SrO
 
  %
  %
 
      0.495
      0.086
 
      0.003
      0.002
 
 4
 3
 
1
1
* Measuring method
1: X-ray fluorescence spectrometry
2: Atomic absorption spectrometry

Comment
Thermal treatment of material before weighing: 800°C, 1 h