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

CERTIFIED REFERENCE MATERIAL
SE21-56
unalloyed steel

Version: 002      Date of certification: 17.07.08      Sample form: Milling 0.200-1.400 mm

Analyte Unit Certified value Confidence
interval (95%)		 No. of independent
repeated series		 Measuring
method*		 
  C
  S
 
  ppm
  ppm
 
     48.3
    151.5
 
      0.8
      1.2
 
12
12
 
1
2
* Measuring method
1: Combustion with coulometric detection
2: Combustion with IR-detection