The Humboldt H-12100 aspirator filter pump has a ball-type check valve to prevent water backflow on loss of pressure and is suitable for vacuum filtrations in a variety of pressure conditions. It has a barbed tail and side arm for connection to flexible tubing. The stainless steel pump resists corrosion and has a 3/8" National Pipe Taper (NPT) thread water inlet connection and a 3" length. The package contains 10 pumps.

Humboldt Manufacturing manufactures testing equipment for construction materials and soil. The company, founded in 1909, is headquartered in Elgin, IL.