The Stable Isotopes Lab focuses on the natural variations in the relative abundances of the stable isotopes of hydrogen, carbon, nitrogen and oxygen. These variations in abundances or isotope ratios are used for, among more, paleoclimate reconstructions.

The Stable Isotopes Lab is also equipped for clumped isotope (heavy isotopes bonded to other heavy isotopes) analysis of carbonates. As the clumping of ¹³C and ¹⁸O into the carbonate mineral lattice is dependent on the temperature, the results can be used for paleoclimate reconstructions.