The ion sweep cone is a metal cone that fits over the ion transfer tube. It channels the sweep gas toward the ion transfer tube entrance, acts as a physical barrier protecting the entrance, and increases source robustness. The result is a significant increase in the number of samples the mass spectrometer (MS) can analyze without a loss of signal intensity. In addition, keeping the ion transfer tube entrance as clean as possible reduces the need for frequent maintenance. The ion sweep cone improves ruggedness when analyzing complex matrices, such as plasma or nonvolatile salt buffers.
CAUTION
You must remove the ion sweep cone before performing nanospray ionization (NSI) experiments or installing the FAIMS interface.