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CIPM MRA PARTICIPANTS
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CIPM MRA PARTICIPANTS
CMC statistics
Results for: airborne ptb
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In the CMCs uncertainty statements, the notation Q[a, b] stands for the root-sum-square of the terms between brackets: Q[a, b] = [a 2 + b 2]1/2
Unless otherwise stated the expanded uncertainties given below correspond to k = 2 (at a 95 % level of confidence)
Germany, PTB (Physikalisch-Technische Bundesanstalt)
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Number concentration in cm-3 Absolute expanded uncertainty in % Number concentration in Absolute expanded uncertainty in
air airborne particles 100 to 2.00E4 1.0E1
  • Mechanism for measurement service delivery : Calibration
  • Soot particle size: 23 nm to 500 nm
  • Approved on 08 July 2015
  • Institute service identifier : ptb-qm-pnc-001
  • CMC ID : EURAMET-QM-DE-000002NI-1
     
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Charge concentration in fC/cm3 Absolute expanded uncertainty in % Charge concentration in Absolute expanded uncertainty in
air airborne particles 1 to 3 7
  • Mechanism for measurement service delivery : Calibration
  • Soot particle size: 23 nm to 500 nm
  • Approved on 08 July 2015
  • Institute service identifier : ptb-qm-cc-001
  • CMC ID : EURAMET-QM-DE-000002NH-1
     

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