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

CERTIFIED REFERENCE MATERIAL
SE21-63
unalloyed steel

Version: 003      Date of certification: 06.03.12      Sample form: Milling 0.200-1.400 mm

Analyte Unit Certified value Confidence
interval (95%)		 No. of independent
repeated series		 Measuring
method*		 
  C
  S
 
  %
  %
 
      0.0036
      0.0026
 
      0.0001
      0.0001
 
 3
 3
 
1
2
* Measuring method
1: Combustion with coulometric detection
2: Combustion with IR-detection