Maintaining MS Filaments:
Like the filament in an incandescent light bulb, the ion source filaments will eventually burn out. Certain practices will reduce the chance of early failure:

• When setting up data acquisition parameters, set the solvent delay so that the analyzer will not turn on while the solvent peak is eluting.
• When the software prompts "Override solvent delay" at the beginning of a run always select No.
• Higher emission current will reduce filament life.
• If you are changing your MSD from the [Edit Parameters] screen, always select MS Off before changing any of the filament parameters.