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Once an organism is decoupled from these cycles (i.e., death), then the carbon-14 decays until essentially gone.The half-life of a radioactive isotope (usually denoted by $$t_$$) is a more familiar concept than $$k$$ for radioactivity, so although Equation $$\ref$$ is expressed in terms of $$k$$, it is more usual to quote the value of $$t_$$.

In 1940 Martin Kamen and Sam Ruben at the University of California, Berkeley Radiation Laboratory did just that.

From this science, we are able to approximate the date at which the organism were living on Earth.

Radiocarbon dating is used in many fields to learn information about the past conditions of organisms and the environments present on Earth.

We cannot be liable for lost samples or the consequences thereof beyond the price paid for the analysis.

If at all possible retain a portion of each of your samples in the unlikely event of loss in shipment or in the laboratory.