Owner Manual for: Aspiration/Filtration Vacuum System Model 2511 Series

If you're working in a lab that handles biohazards, solvents, or particulates, you need a vacuum system that protects both your samples and your team. The Welch 2511 Series Aspiration/Filtration Vacuum Systems are built for that purpose. These oil-free diaphragm pumps are engineered to support aspiration, filtration, and degassing tasks with consistent vacuum performance and minimal maintenance.

This manual covers three models:

• 2511B-76
• 2511C-77
• 2511B-75 (not listed in the title but referenced in the document)

Each model is optimized for different lab setups, with variations in vacuum control, bottle capacity, and filtration options.

Pump Type: Oil-free diaphragm 

Ultimate Vacuum: ~100 mbar (75 Torr) 

Flow Rate: ~11 L/min 

Applications:

• Cell culture aspiration
• Filtration of aqueous solutions
• Degassing of solvents
• Waste collection in biosafety environments

Included Components:

• Vacuum pump
• Collection bottle (varies by model)
• Hydrophobic filter
• Tubing and connectors
• Optional vacuum regulator (model-dependent)

Safety Considerations:

• Integrated hydrophobic filter prevents aerosol contamination
• Overflow protection in bottle design
• Chemical-resistant wetted materials