A filtration funnel with integral prefilter usable for filtering fluids. The integral prefilter is disposed above the final filter which is sealed to the funnel. The prefilter may contain one or more layers of prefilter material, and is sealed to the funnel with one or more seal rings. The funnel may be used with either vacuum or pressure.

 
Web www.patentalert.com

< Microporous filter media, filtration systems containing same, and methods of making and using

< Filtering device having filter bag seal

> Process for recycling mixed liquor with dual-use jet recirculation pumps to provide highly efficient wastewater treatment

> Vessel head-flush process

~ 00246