This table was reviewed on 05 November 2020, and refers to the scope for EffecTech in the UK only (Issue No. 052).

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.

Blast furnace gas mixtures

Calibrated Gas Mixtures (CGM)
component range calibration and
measurement capability
(CMC)*
amount fraction (% mol/mol) amount fraction (% mol/mol)
nitrogen 27 to 54 0.25 % relative
carbon dioxide 20 to 31 0.25 % relative
hydrogen 1 to 16 0.25 % relative + 0.03
carbon monoxide 20 to 31 0.25 % 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

Basic Oxygen Steelmaking gas (BOS)

Calibrated Gas Mixtures (CGM)
component range calibration and
measurement capability
(CMC)*
amount fraction (% mol/mol) amount fraction (% mol/mol)
nitrogen 11 to 30 0.2 % relative + 0.02
carbon dioxide 12 to 20 0.2 % relative + 0.02
carbon monoxide 45 to 75 0.15 – 0.1 % relative
hydrogen 0.4 to 3.0 0.5 % relative + 0.002
oxygen 0.3 to 1.3 0.7 % relative + 0.0005
* 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