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  1. Central Calibration Laboratory
  2. Calibration Results
Standard Reference Gases: Calibration Results
Beginning February 8, 2021, results for CO2 are on the WMO X2019 scale.

CO2 results on the previous WMO X2007 scale are available here.

Reference Gas Calibration Results
The JSON format will allow you to download a file of results for further analysis. Go here for more details.
The CSV format will allow you to download a spreadsheet compatible file of results for further analysis.
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