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

CERTIFIED REFERENCE MATERIAL
SX02-11
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
 
  %
  %
  %
  %
  %
 
     40.63
     25.04
      2.98
      0.172
      0.137
 
      0.06
      0.16
      0.01
      0.002
      0.002
 
 6
 4
 5
 6
 4
 
1
1
1
1
1
 
  S
  Al2O3
  MgO
  TiO2
  Na2O
 
  %
  %
  %
  %
  %
 
      1.48
      6.86
      2.79
      0.319
      0.156
 
      0.04
      0.03
      0.01
      0.004
      0.004
 
 5
 6
 6
 6
 3
 
1
1
1
1
2
 
  K2O
  SrO
  BaO
  V2O5
 
  %
  %
  %
  %
 
      0.524
      0.083
      0.041
      0.014
 
      0.002
      0.001
      0.002
      0.001
 
 4
 3
 4
 3
 
1
1
1
1
* Measuring method
1: X-ray fluorescence spectrometry
2: Atomic absorption spectrometry

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