Agilent Roughing Vacuum Pump for Agilent Mass Spec

Agilent MS120-55 High-Capacity Rotary Vane Roughing / Foreline Vacuum Pump. A heavy-duty, dual-stage oil-sealed rotary vane vacuum pump engineered specifically to provide foreline backing and continuous rough vacuum evacuation for high-throughput mass spectrometers and liquid chromatography-mass spectrometry (LC/MS) systems.

Used; excellent condition; see video of operating unit this link.

• MPN / Catalog Model: MS120-55 (Agilent MS-Series Vacuum Technologies)
• Manufacturer & Line: Agilent Technologies / Mass Spectrometry Vacuum & Foreline Systems
• Primary Function: Dedicated primary foreline roughing pump responsible for evacuating atmospheric gas loads, continuous drying-gas volumes, and high-volume solvent vapor expansion generated in atmospheric pressure ionization (API) sources
• Vacuum Rating & Staging: Delivers rough foreline vacuum down to the 10^-3 mbar 10^-3 Torr) range, establishing the required intermediate pressure drop necessary to back downstream turbomolecular high-vacuum pumps operating at 10-5 to $10-7 mbar
• Pumping Speed & Volumetric Displacement: High-capacity volumetric displacement (nominal 120 m³/h / ~70 CFM class) optimized to support high-flow desolvation rates without choking the mass spectrometer's front-end vacuum manifold
• Solvent & Vapor Handling: Equipped with a high-efficiency gas ballast mechanism to purge condensable solvent vapors (methanol, acetonitrile, water, and volatile buffers) from the pump fluid, preventing emulsion buildup and extending mechanical pump life
• Port Connections & Exhaust: Standard ISO-KF / NW sanitary vacuum intake and exhaust flange ports designed for high-conductance vacuum hose lines, external oil-mist exhaust filters, and automated foreline isolation valves
• Agilent Mass Spectrometer Compatibility:
  • Triple Quadrupole (QQQ) LC/MS: Agilent 6400 Series (6460, 6470, 6490, 6495 Triple Quadrupole instruments)
  • Time-of-Flight & Q-TOF LC/MS: Agilent 6200 Series TOF and 6500 Series Quadrupole Time-of-Flight (Q-TOF) systems
  • Single Quadrupole LC/MS: High-throughput configurations of the Agilent 6100 Series Single Quadrupole line
• Primary Application: Continuous rough vacuum backing for Electrospray Ionization (ESI), Atmospheric Pressure Chemical Ionization (APCI), and Agilent Jet Stream (AJS) high-gas-flow desolvation chambers in bioanalytical, metabolomics, and environmental mass spectrometry workflows