What are the uncertainty of hydrogen and oxygen isotope ratios reported by the laboratory?
The 2-sigma uncertainty of oxygen and hydrogen isotopic results is 0.2 per mill and 2 per mill, respectively, unless otherwise indicated. This means that if a sample is resubmitted for analysis at a later date, there is a 95% probability that the oxygen and hydrogen isotopic result reported will be within 0.2 per mill and 2 per mill, respectively, of that originally reported.
