Menu This table was reviewed on 5 November 2020 and refers to the ISO 17034 scope (Issue No. 001) and ISO 17025 scope (Issue No. 052) for EffecTech in the UK only.
For the most up-to-date information, as well as the scopes for EffecTech Gases PvT Ltd (India) and EffecTech Qatar, see EffecTech’s ISO 17025 scope.
| Primary Reference Gas Mixtures (PRGM) | ||
| Component | Range | Calibration and Measurement Capability (CMC)* |
| amount fraction (mol/mol) | amount fraction (mol/mol) | |
| carbon monoxide in nitrogen | 10 ppm to 100 ppm | 0.13 % relative + 0.3 ppm |
| 100 ppm to 1000 ppm | 0.40 % relative | |
| carbon dioxide in nitrogen | 0.1 % to 5 % | 0.25 % + 7.5 ppm |
| 5 to 15 % | 0.10 % relative + 85 ppm | |
| oxygen in nitrogen | 10 ppm to 100 ppm | 0.80 % relative + 0.1 ppm |
| 100 ppm to 1000 ppm | 0.45 % relative + 0.25 ppm | |
| 0.1 % to 1.0 % | 0.35 % relative +0.5 ppm | |
| 1.0 % to 22.5 % | 0.10 % relative + 15 ppm | |
| nitric oxide in nitrogen | 10 ppm to 60 ppm | 0.10 % relative + 0.13 ppm |
| 60 ppm to 600 ppm | 0.20 % relative + 0.07 ppm | |
| nitrogen dioxide in synthetic air | 5 ppm to 500 ppm | 2.0 % relative |
| sulphur dioxide in nitrogen | 10 ppm to 200 ppm | 0.10 % relative + 0.5 ppm |
| 200 ppm to 1000 ppm | 0.30 % relative + 0.1 ppm | |
| methane in nitrogen | 0.1 % to 2 % | 0.18 % relative + 5 ppm |
| 2 % to 5 % | 0.10 % relative + 25 ppm | |
| methane in synthetic air | 0.1 % to 2 % | 0.18 % relative + 5 ppm |
| 2 % to 2.5 % | 0.10 % relative + 25 ppm | |
| propane in nitrogen | 1 ppm to 1000 ppm | 0.40 % relative + 0.05 ppm |
| 0.1 % to 2 % | 0.14 % relative + 2.6 ppm | |
| propane in synthetic air | 1 ppm to 1000 ppm | 0.40 % relative + 0.05 ppm |
| 0.1 % to 1.1 % | 0.14 % relative + 2.6 ppm | |
| * The calibration and measurement capability is based on a standard uncertainty multiplied by a coverage factor k=2, providing a level of confidence of approximately 95 %. The uncertainty evaluation has been carried out in accordance with UKAS requirements. | ||
| Certified Reference Materials (CRM) | ||
| Component | Range | ISO 17025 Calibration and Measurement Capability (CMC)* |
| Binary emission gas mixtures | Amount fraction (mol/mol) | Amount fraction (mol/mol) |
| carbon monoxide in nitrogen or synthetic air | 10 ppm to 100 ppm | 0.25 % relative + 0.55 ppm |
| 100 ppm to 1000 ppm | 0.80 % relative | |
| carbon dioxide in nitrogen or synthetic air | 0.1 % to 5 % | 0.50 % relative + 15 ppm |
| 5 % to 15 % | 0.20 % relative + 170 ppm | |
| oxygen in nitrogen | 10 ppm to 100 ppm | 1.6% relative + 0.1 ppm |
| 100 ppm to 1000 ppm | 0.9% relative + 0.5 ppm | |
| 0.1 % to 1.0 % | 0.7% relative + 1.0 ppm | |
| 1.0 % to 22.5 % | 0.18% relative + 30 ppm | |
| nitric oxide in nitrogen | 10 ppm to 60 ppm | 0.20 % relative + 0.25 ppm |
| 60 ppm to 600 ppm | 0.40 % relative + 0.13 ppm | |
| nitrogen dioxide in synthetic air | 5 ppm to 500 ppm | 4.0 % relative |
| sulphur dioxide in nitrogen or synthetic air | 10 ppm to 200 ppm | 0.17 % relative + 1.0 ppm |
| 200 ppm to 1000 ppm | 0.60 % relative + 170 ppm | |
| methane in nitrogen | 0.1 % to 2 % | 0.25 % relative + 10 ppm |
| 2 % to 5 % | 0.15 % relative + 50 ppm | |
| methane in synthetic air | 0.1 % to 2 % | 0.25 % relative + 10 ppm |
| 2 % to 2.5 % | 0.15 % relative + 50 ppm | |
| Tertiary emission gas mixtures | Amount fraction (mol/mol) | Amount fraction (mol/mol) |
| nitric oxide | 10 ppm to 60 ppm | 0.20 % relative + 0.25 ppm |
| 60 ppm to 600 ppm | 0.40 % relative + 0.13 ppm | |
| nitrogen dioxide in nitrogen | 5 ppm to 500 ppm | 4.0 % relative |
| * The calibration and measurement capability is based on a standard uncertainty multiplied by a coverage factor k=2, providing a level of confidence of approximately 95 %. The uncertainty evaluation has been carried out in accordance with UKAS requirements. | ||
