Matrix or material | Dissemination range of measurement capability | Range of certified values in reference materials | ||
Electrolytic conductivity in S/m | Relative expanded uncertainty in % | Electrolytic conductivity in S/m | Relative expanded uncertainty in % | |
aqueous solution | 1.50E-3 to 0.015 | 1.7 to 0.23 | 5.00E-3 to 0.015 | 1.7 to 0.23 |
Matrix or material | Dissemination range of measurement capability | Range of certified values in reference materials | ||
Electrolytic conductivity in S/m | Relative expanded uncertainty in % | Electrolytic conductivity in S/m | Relative expanded uncertainty in % | |
aqueous solution | 0.015 to 0.15 | 0.62 to 0.19 | 0.015 to 0.15 | 0.64 to 0.19 |
Matrix or material | Dissemination range of measurement capability | Range of certified values in reference materials | ||
pH in | Absolute expanded uncertainty in | pH in | Absolute expanded uncertainty in | |
aqueous pH buffer solution | 8.5 to 9.5 | 4.0E-3 | 8.5 to 9.5 | 7.0E-3 |
Matrix or material | Dissemination range of measurement capability | Range of certified values in reference materials | ||
Electrolytic conductivity in µS/cm | Relative expanded uncertainty in % | Electrolytic conductivity in µS/cm | Relative expanded uncertainty in % | |
aqueous solution (KCl or NaCl) | 0.15 to 1.5 | 0.39 to 0.4 |
Matrix or material | Dissemination range of measurement capability | Range of certified values in reference materials | ||
pH in | Absolute expanded uncertainty in | pH in | Absolute expanded uncertainty in | |
aqueous pH buffer solution | 1.5 to 1.9 | 5.0E-3 | 1.5 to 1.9 | 7.0E-3 |
Matrix or material | Dissemination range of measurement capability | Range of certified values in reference materials | ||
pH in | Absolute expanded uncertainty in | pH in | Absolute expanded uncertainty in | |
aqueous pH buffer solution | 3.8 to 4.2 | 7.0E-3 | 3.8 to 4.2 | 8.0E-3 |
Matrix or material | Dissemination range of measurement capability | Range of certified values in reference materials | ||
Electrolytic conductivity in µS/cm | Relative expanded uncertainty in % | Electrolytic conductivity in µS/cm | Relative expanded uncertainty in % | |
aqueous solution (KCl or NaCl) | 0.05 to 0.15 | 0.73 to 0.39 |
Matrix or material | Dissemination range of measurement capability | Range of certified values in reference materials | ||
Electrolytic conductivity in µS/cm | Relative expanded uncertainty in % | Electrolytic conductivity in µS/cm | Relative expanded uncertainty in % | |
aqueous solution (KCl or NaCl) | 1.5 to 15 | 0.4 to 1.8 |
Matrix or material | Dissemination range of measurement capability | Range of certified values in reference materials | ||
Electrolytic conductivity in µS/cm | Relative expanded uncertainty in % | Electrolytic conductivity in µS/cm | Relative expanded uncertainty in % | |
aqueous solution (KCl or NaCl) | 15 to 150 | 1.8 |
Matrix or material | Dissemination range of measurement capability | Range of certified values in reference materials | ||
Electrolytic conductivity in S/m | Relative expanded uncertainty in % | Electrolytic conductivity in S/m | Relative expanded uncertainty in % | |
aqueous solution | 0.15 to 1.5 | 0.1 | 0.15 to 1.5 | 0.1 |
Matrix or material | Dissemination range of measurement capability | Range of certified values in reference materials | ||
pH in | Absolute expanded uncertainty in | pH in | Absolute expanded uncertainty in | |
aqueous pH buffer solution | 6.8 to 7.5 | 4.0E-3 | 6.8 to 7.5 | 5.0E-3 |
Matrix or material | Dissemination range of measurement capability | Range of certified values in reference materials | ||
pH in | Absolute expanded uncertainty in | pH in | Absolute expanded uncertainty in | |
aqueous pH buffer solution | 9 to 9.4 | 4.0E-3 | 9 to 9.4 | 7.0E-3 |
Matrix or material | Dissemination range of measurement capability | Range of certified values in reference materials | ||
pH in | Absolute expanded uncertainty in | pH in | Absolute expanded uncertainty in | |
aqueous pH buffer solution | 9.5 to 10.5 | 4.4E-3 |
Matrix or material | Analyte or component | Dissemination range of measurement capability | Range of certified values in reference materials | ||
Mass fraction in % | Relative expanded uncertainty in % | Mass fraction in % | Absolute expanded uncertainty in % | ||
high purity sodium carbonate | base expressed as sodium carbonate | 99.8 to 100 | 6.8E-2 |
Matrix or material | Analyte or component | Dissemination range of measurement capability | Range of certified values in reference materials | ||
Amount-of-substance fraction in cmol/mol | Relative expanded uncertainty in % | Amount-of-substance fraction in cmol/mol | Relative expanded uncertainty in % | ||
nitrogen and synthetic air | carbon dioxide | 0.05 to 15 | 0.26 | 0.05 to 15 | 0.26 |
nitrogen and synthetic air | carbon monoxide | 0.05 to 10 | 0.52 | 0.05 to 10 | 0.52 |
nitrogen | oxygen | 0.05 to 25 | 0.34 | 0.05 to 25 | 0.34 |
nitrogen and synthetic air | propane | 20 to 1000 | 2.2 | 20 to 1000 | 2.2 |
Matrix or material | Analyte or component | Dissemination range of measurement capability | Range of certified values in reference materials | ||
Amount-of-substance fraction in mmol/mol | Relative expanded uncertainty in % | Amount-of-substance fraction in mmol/mol | Relative expanded uncertainty in % | ||
synthetic natural gas | carbon dioxide | 0.2 to 200 | 1.2 to 0.21 | 0.2 to 200 | 1.2 to 0.21 |
synthetic natural gas | ethane | 2 to 250 | 0.65 | 2 to 250 | 0.65 |
synthetic natural gas | helium | 0.5 to 25 | 0.87 | 0.5 to 25 | 0.87 |
synthetic natural gas | hexane | 0.1 to 2.5 | 0.74 | 0.1 to 2.5 | 0.74 |
synthetic natural gas | hydrogen | 5 to 100 | 0.73 | 5 to 100 | 0.73 |
synthetic natural gas | isobutane | 0.5 to 15 | 0.69 | 0.5 to 15 | 0.69 |
synthetic natural gas | isopentane | 0.1 to 2.5 | 2.1 | 0.1 to 2.5 | 2.1 |
synthetic natural gas | methane | 500 to 999 | 4.0E-2 | 500 to 999 | 4.0E-2 |
synthetic natural gas | n-butane | 0.5 to 15 | 0.73 | 0.5 to 15 | 0.73 |
synthetic natural gas | n-pentane | 0.1 to 2.5 | 1.5 | 0.1 to 2.5 | 1.5 |
synthetic natural gas | neo-pentane | 0.1 to 2.5 | 1.1 | 0.1 to 2.5 | 1.1 |
synthetic natural gas | nitrogen | 1 to 250 | 5.7 to 0.18 | 1 to 250 | 5.7 to 0.18 |
synthetic natural gas | propane | 0.5 to 120 | 0.64 | 0.5 to 120 | 0.64 |
Matrix or material | Analyte or component | Dissemination range of measurement capability | Range of certified values in reference materials | ||
Amount-of-substance fraction in mmol/mol | Relative expanded uncertainty in % | Amount-of-substance fraction in % | Absolute expanded uncertainty in % | ||
synthetic natural gas | carbon dioxide | 5 to 50 | 0.5 | ||
synthetic natural gas | ethane | 5 to 100 | 0.5 | ||
synthetic natural gas | hexane | 0.1 to 1 | 1.0 | ||
synthetic natural gas | isobutane | 0.5 to 10 | 0.8 | ||
synthetic natural gas | isopentane | 0.2 to 2 | 0.81 | ||
synthetic natural gas | methane | 700 to 980 | 5.0E-2 | ||
synthetic natural gas | n-butane | 0.5 to 10 | 0.79 | ||
synthetic natural gas | n-pentane | 0.2 to 2 | 0.79 | ||
synthetic natural gas | nitrogen | 5 to 100 | 0.5 | ||
synthetic natural gas | propane | 1 to 20 | 0.51 |
Matrix or material | Analyte or component | Dissemination range of measurement capability | Range of certified values in reference materials | ||
Amount-of-substance fraction in mmol/mol | Relative expanded uncertainty in % | Amount-of-substance fraction in mmol/mol | Relative expanded uncertainty in % | ||
synthetic hydrogen-enriched natural gas | methane | 500 to 999 | 6.0E-2 | 500 to 999 | 6.0E-2 |
Matrix or material | Analyte or component | Dissemination range of measurement capability | Range of certified values in reference materials | ||
Amount-of-substance content in mol/kg | Absolute expanded uncertainty in mol/kg | Amount-of-substance content in mol/kg | Absolute expanded uncertainty in mol/kg | ||
water | Total acid content expressed as hydrochloric acid | 0.09 to 0.11 | 5.3E-6 |
This metrology area covers the fields of acoustics, ultrasound and vibration.
This metrology area covers the fields of DC and AC measurements, impedance, electric and magnetic fields, radiofrequencies and measurements on materials.
This metrology area covers the fields of laser frequencies and dimensional metrology.
This metrology area covers the fields of mass standards, force, pressure, density, hardness, torque, gravity and viscosity.
This metrology area covers all fields relevant to chemistry and biology.
This metrology area covers the fields of dosimetry, radioactivity and neutron measurements.
a0 = -4.1926
a1 = 0.4726