Enabling scientific discovery through stable isotope analysis
Reference Materials
O2 Gas Laboratory Comparison

O2 gas from a compressed cylinder originating from Praxair in Seattle, Washington.

Here is a table of all laboratories that have measured this gas, the results they obtained, and information provided about their reference materials. ± indicates standard deviation. 17Oexcess was calculated as (ln(δ17O/1000+1)-0.528*ln(δ18O/1000+1))*1000000 and are in units of permeg.


Laboratory
Number

δ17O
(permil)

δ18O
(permil)

17Oexcess
(permeg)
Reference
Gas δ17O
(permil)
Reference
Gas δ18O
(permil)
1-4.52 ± 0.023-8.55 ± 0.0524.2423.7046.13
2-4.45 ± 0.022-8.60 ± 0.017100.51unkunk
3-4.32 ± 0.009-8.26 ± 0.01548.38-7.02-13.38
4-4.21 ± 0.068-8.08 ± 0.09266.0612.5324.56
5-4.17 ± 0.044-7.89 ± 0.0257.208.8417.56