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

CERTIFIED REFERENCE MATERIAL
SE21-30
unalloyed steel

Version: 003      Date of certification: 24.01.13      Sample form: Milling 0.200-1.400 mm

Analyte Unit Certified value Confidence
interval (95%)		 No. of independent
repeated series		 Measuring
method*		 
  C
  Si
  Mn
  P
  S
 
  %
  %
  %
  %
  %
 
      0.0457
      0.0304
      0.3240
      0.0101
      0.0279
 
      0.0003
    < 0.0001
      0.0007
      0.0003
      0.0001
 
 3
 3
 3
 6
 3
 
1
2
2
3
4
 
  Cr
  Mo
  Ni
  Al lösl.
  As
 
  %
  %
  %
  %
  %
 
      0.0152
      0.0030
      0.0215
      0.0624
      0.0062
 
      0.0001
      0.0001
    < 0.0001
      0.0002
      0.0001
 
 3
 3
 3
 3
 3
 
2
2
2
2
3
 
  Co
  Cu
  Sn
  V
  Ca
 
  %
  %
  %
  %
  %
 
      0.0021
      0.0191
    < 0.001
    < 0.001
      0.0001
 
    < 0.0001
      0.0001
      -.-
      -.-
    < 0.0001
 
 3
 3
 3
 3
 3
 
2
2
2
2
2
* Measuring method
1: Combustion with coulometric detection
2: Atomic absorption spectrometry
3: Photometry
4: Combustion with IR-detection