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– It is important to understand the pretreatment applied to samples since they directly affect the final result.
You are welcome to contact us to discuss the pretreatment or request that we contact you after the pretreatment (and prior to dating).
Other processes may affect the local concentrations of carbon-14.
These effects are corrected for by comparing samples from different locations.
It is known that such variations have occurred, but it is thought they can be corrected for by comparing a sample’s C level with the standard curve constructed using samples of known age.