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Chemical Analyte
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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)
Costa Rica, LACOMET (Laboratorio Costarricense de Metrologia)
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in mg/kg Absolute expanded uncertainty in mg/kg Mass fraction in
natural water, synthetic water, acid solution (up 10 %) potassium 0.14 to 1.00E4 1.1E-2 to 1.5E2
  • Mechanism for measurement service delivery : Assigning values to PT scheme samples, internal calibration
  • Approved on 23 October 2019
  • Institute service identifier : 13.1.0.1.3, 32.1.0.0.1 and 34.1.0.0.1
  • CMC ID : SIM-QM-CR-00000JW7-1
     
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in mg/kg Absolute expanded uncertainty in mg/kg Mass fraction in
natural water, synthetic water, acid solution (up 10 %) sodium 0.15 to 1000 1.5E-2 to 3.0E1
  • Mechanism for measurement service delivery : Assigning values to PT scheme samples, internal calibration
  • Approved on 23 October 2019
  • Institute service identifier : 13.1.0.1.3, 32.1.0.0.1 and 34.1.0.0.1
  • CMC ID : SIM-QM-CR-00000JW6-1
     

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