BioExcell Syringe Filters, PTFE, 0.22μm, 25mm, Hydrophobic

Physical Characteristics:

	13 mm diameter barrel	25mm diameter barrel
Surface area (cm2):	0.65	3.90
Sample volume (ml):	<15	<105
Maximum pressure (bar):	45	90
Hold up volume (μl):	8.5	28.5

General Characteristics:

• Disposable
• Luer-Lok™ and pressure fitting
• Ultrasonically bonded for reliability
• Filter media type clearly inscribed on barrel
• Excellent unit-to-unit and lot-to-lot reproducibility and consistency
• High purity virgin polypropylene housing, no dyes or pigments added
• Every unit type is available as an individually wrapped gamma sterilized pack
• Unique concentric funnel shaped barrel increases volume and decreases back pressure

Polytetrafluoroethylene (PTFE) - Hydrophilic or Hydrophobic

• 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
• Can be made more hydrophilic by flushing with alcohol, followed by water
• 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
• Moisture barrier for venting applications and vacuum pump line protection
• Ideal for aerosol sampling
• Filter viscous organic-based HPLC samples
• Glass microfiber prefilter raises absorption capacity and loading
• After pre-wetting with alcohol, may be used for fine particle removal of aqueous and mild organic solutions in Ion Chromatography