Filters are available in a broad range of membrane materials with sterile and non-sterile packaging options. PTFE membranes are inherently hydrophobic; they are ideal for the filtration of nonpolar liquids and gases. Very resistant to solvents as well as acids or bases. Used for filtering and de-gassing chromatography solvents Permits optimal utilization of small sample volumes Excellent chemical compatibility for filtering harsh chemicals that destroy other membrane materials Glass microfiber prefilter raises absorption capacity and loading