Three machines are used for these measurements :

• A mass spectrometer Delta V+ (Measure of d¹⁵N - N₂, d¹⁸O - O₂, d⁴⁰Ar/³⁶Ar, d⁴⁰Ar/³⁸Ar and d¹⁷O - O₂ in the air)

Learn more here, and there.

• A mass spectrometer MAT253 (Measure of d15N - N2, d18O - O2, d40Ar/36Ar, d40Ar/38Ar and d17O - O2 in the air)
  Learn more here and there.

• A mass spectrometer MAT253+ allows measurements for dating d⁴⁰Ar / paleotemperature

Updated on 13 mai 2020