Ultimate-clean laboratory

In the ultimate-clean laboratory, concentrations of 57 elements are determined by ICPMS, and precise isotope ratio analyses for B–Li–Sr–Ce–Nd–Os–Pb–Hf are performed by thermal ionization mass spectrometry (TIMS) and by multicollector ICPMS. Age determinations using the Rb–Sr, Sm–Nd, U–Th–Pb, La–Ce, Re–Os, Lu–Hf, and Mn–Cr systems, and U–Th–Ra isotope disequilibrium, can also be undertaken.