Have a look at this application report:
	AN30021: In Situ U-Pb Zircon Dating Using Laser Ablation-Multi Ion Counting-ICP-MS (LA-MIC-ICP-MS) Author(s): Claudia Bouman1, Johannes Schwieters1, Alain Cocherie2, Michèle Robert2, Michael Wieser3 1Thermo Electron Corporation, Bremen, Germany; 2BRGM, Orléans, France;3University of Calgary, Canada
Visit our Geochemical Resource Center: www.thermo.com/grc

The design of the NEPTUNE multicollector ICP-MS is based on the sum of our experience in multicollector technology and ICP-MS.

The system incorporates the unique features of the TRITON analyzer and the the ELEMENT2 plasma interface, which  provide the basis for a uniquely powerful MC-ICP-MS. Just as TRITON and ELEMENT2 redefined the TIMS and high resolution ICP-MS respectively, the NEPTUNE is expected to redefine the practice of multicollector ICP-MS.

The NEPTUNE offers

• High resolution multicollector inductively coupled plasma mass spectrometer (MC-ICP-MS)
• Precise and accurate isotope ratios of most of the periodic table
• Includes the novel ion optical and detector technologies from TRITON
• Multicollection with high mass resolution
• High abundance filter (RPQ) and multi-ion-counting options