Ca/U = ppm/ppm
isotopes: ⁴²Ca ⁴³Ca ⁴⁴Ca NA

P/U = ppm/ppm
isotopes: ³¹P NA

Si/U = ppm/ppm
isotopes: ²⁹Si ³⁰Si NA

Zr/U = ppm/ppm
isotopes: ⁹⁰Zr ⁹¹Zr NA

Hf/U = ppm/ppm
isotopes: ¹⁷⁴Hf ¹⁷⁶Hf ¹⁷⁷Hf
¹⁷⁸Hf ¹⁷⁹Hf ¹⁸⁰Hf NA

Sr/U = ppm/ppm
isotopes: ⁸⁴Sr ⁸⁶Sr ⁸⁷Sr ⁸⁸Sr NA

Mn/U = ppm/ppm
isotopes: ⁵⁵Mn NA

Y/U = ppm/ppm
isotopes: ⁸⁹Y NA

Cl/U = ppm/ppm
³⁵Sm ³⁷Sm NA

Sm/U = ppm/ppm
¹⁴⁷Sm NA

^xU = pmol/ml, ^xU/²³⁸U =
isotopes: ²³³U ²³⁴U ²³⁵U ²³⁶U NA

^xTh = pmol/ml, ^xTh/²³²Th =
isotopes: ²²⁹Th ²³⁰Th NA

^xSm = pmol/ml, ^xSm/¹⁴⁷Sm =
isotopes: ¹⁴⁴Sm ¹⁴⁶Sm ¹⁴⁸Sm ¹⁴⁹Sm
¹⁵⁰Sm ¹⁵²Sm ¹⁵⁴Sm NA