Electron Multipliers • Analog or Pulse Counting Detection • Positive and/or Negative Ion Detection • Off Axis Design • Very Low Noise • High Gain • Includes Separate Conversion Dynode • Stable Operation • Long Shelf Life Preamplifiers • Analog and Pulse Counting Versions • Bipolar Version for Positive and Negative Ions • Optional Phase-Lock Amplifier • All Preamp include the cable Mounting Options • System Flange and In-situ Mounting Options • Axial or Radial Options • Can be electrically Isolated from Quadrupole Housing • Axial Viewport available on some versions • Additional electrical Feedtroughts available on some versions

Mounting Options
Model	Type	Seal	Viewport	Applications
100 CF UHV Flange	System Flange Mounted	Metal	Yes	General Use
150 CF UHV Flange	System Flange Mounted	Metal	Yes	General Use
TQMS 150 CF Flange	System Flange Mounted	Metal	No	MS/ MS
APIMS Flange	System Flange Mounted	Metal or O'Ring	No	APIMS
Double Side 150 CF	In Vacuum Flange Mounted	Metal	No	Molecular Beam, Cluster and Biomolecule Deposition
In-Situ	In Vacuum Flange Mounted	NA	NA	General Use