842-070 is a specialized tungsten filament assembly designed specifically for the HPQ (High Pressure Quadrupole) series of mass spectrometry analyzers. This component is critical for enabling gas analysis at pressures higher than those supported by standard residual gas analyzers without the need for complex differential pumping systems. 842-070 is a user-serviceable, pre-aligned assembly that can be replaced by removing barrel connectors and loosening holding screws, ensuring consistent ion source geometry.

To verify compatibility with specific RGA models, consult the “specifications” section below.