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

CERTIFIED REFERENCE MATERIAL
SX35-13
Limestone

Version: 006      Date of certification: 24.09.10      Sample form: Powder < 0.125 mm

Analyte Unit Certified value Confidence
interval (95%)		 No. of independent
repeated series		 Measuring
method*		 
  CaO
  SiO2
  Fe2O3
  MnO
  P2O5
 
  %
  %
  %
  %
  %
 
     55.06
      0.289
      0.082
      0.017
      0.007
 
      0.17
      0.010
      0.002
    < 0.001
      0.001
 
 3
 3
 3
 3
 3
 
1
1
1
1
1
 
  SO3
  Al2O3
  MgO
  TiO2
  Na2O
 
  %
  %
  %
  %
  %
 
      0.012
      0.097
      0.466
      0.006
      0.003
 
      0.003
      0.005
      0.004
    < 0.001
      0.001
 
 4
 3
 3
 3
 3
 
1,2
1
1
1
3
 
  K2O
  SrO
  CO2
  H2O 900°C
 
  %
  %
  %
  %
 
      0.029
      0.019
     43.80
      0.099
 
      0.004
      0.001
      0.22
      0.014
 
 7
 3
 3
 4
 
1,3
1
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