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

CERTIFIED REFERENCE MATERIAL
SX27-09
Fluorspar

Version: 001      Date of certification: 30.08.07      Sample form: Powder < 0.125 mm

Analyte Unit Certified value Confidence
interval (95%)		 No. of independent
repeated series		 Measuring
method*		 
  Ca
  SiO2
  Fe2O3
  MnO
  SO4
 
  %
  %
  %
  %
  %
 
     39.98
      3.93
     15.72
      0.077
      0.027
 
      0.10
      0.02
      0.02
      0.001
      0.006
 
 5
 5
 4
 5
 5
 
1
1
1
1
1
 
  Al2O3
  MgO
  Na2O
  K2O
  Cr2O3
 
  %
  %
  %
  %
  %
 
      0.310
      0.017
      0.030
      0.029
      0.004
 
      0.005
      0.004
      0.003
      0.001
      0.001
 
 5
 5
 3
 5
 5
 
1
1
2
1,2
1
 
  CuO
  ZnO
  F
  CO2
  H2O 900°C
 
  %
  %
  %
  %
  %
 
      0.052
      0.004
     38.10
      0.027
      0.929
 
      0.001
      0.001
      0.21
      0.001
      0.011
 
 5
 5
 4
 3
 3
 
1
1
1
3
4
* Measuring method
1: X-ray fluorescence spectrometry
2: Atomic absorption spectrometry
3: Digestion by acids, coulometric detection
4: Heat conductivity after reduction

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