Hand vacuum pumps are manually operated, and can be used as hand-operated pressure and vacuum pumps or as fluid aspirators that aid in filtration, siphoning, preventing fluid line bleeding, checking for leaks, and liquid transfer. Pumps may be constructed of corrosion- or material-resistant components, and pump efficiency may be maintained with replacement parts. Utilize Thermo Scientific™ Nalgene™ Aspirator Vacuum Pumps in conjunction with laboratory sink faucets to facilitate efficient vacuum draws and flow rates.