Vacuum Filtration Guide

Welcome to our collection of resource documents for vacuum filtration! For more information on specific products, be sure to visit the FAQ tab on our product pages, or contact a Sterlitech representative.

Vacuum filtration is used primarily in microbiological and laboratory procedures involving the collection of a particulate (bacteria, precipitate, etc.) from a liquid suspension. Liquid poured into a funnel passes through a filter, which retains the particulate, and filtrate can be collected into a filter flask, directly or via a vacuum manifold. Applying vacuum filtration also reduces process time compared to gravity flow.

Sterlitech's selection covers all the essential components for lab vacuum filtration applications, along with accessories. We also offer kits to enable easy set-up of botanical extraction water testing, media aspiration, and general filtration. Our full product catalog is available for download on this page. 

Application Guide

Typical Applications	DNA/RNA hybridization, protein binding, receptor binding studies, and gravimetric analyses		Coliform, yeast, mold, total bacteria, and sterility testing	Colony hybridization, procedures requiring a large filtration area
Recommended Filter Holder Model
Glass with frit	KG 13	KG 25	KG 47	KG 90
Glass with stainless steel support	-	KGS 25	KGS 47	KGS 90
Glass with PTFE support	-	-	KGT 47	-
Glass with all-PTFE seal	-	-	KGT 47 TF	-
All-glass assembly	-	GFA 25 GFS 25	GFA 47 GFS 47 GFT 47	-
Phase/Fraction collector	-	-	P/FC 1 & P/FC 2	-
Polysulfone	-	-	KP 47	-
Stainless steel	-	-	KSF 47	-
Magnetic polyethersulfone	-	-	MF Series	-
Membrane Filter Specifications
Membrane diameter (mm)	13	25	47	90
Filtration area (cm2)	1.2	2.1	9.6	43.2