Depending on the consistency of the soot, the pretreatments may be varied allowing for either acid or acid and alkali.
Accuracy relative to the time of use of the fires will depend upon the source of the soot.
If you have a 200 year-old tree that is living today, a date on the bark represents today and a date on the centermost ring represents 200 years ago even though the tree is still alive. You only need to include the confirmation code in the package.
Therefore, the accuracy of the radiocarbon date depends upon where the wood came from within the tree. Read about sample material return How much does carbon dating cost?
If it is from marine food residues, it will have “reservoir effect” associated with it which must be corrected for.
If the soot is from old trees (tree trunks) the date could be too old.
– Please contact us to discuss the nature of your research objective to ensure the most appropriate material selection and pretreatment of your pottery sherds.
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Otherwise, it will be discarded upon completion of the analysis.