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Thumbnail Filmstrip of Glass Fiber/PES Syringe Filters, 0.7/0.22um, 25mm, Luer-Lok/Luer Slip, Nonsterile, 50/Pk Images
Featuring a multilayer construction that pairs two graded glass fiber (GF/F) prefilter layers with a final 0.22um hydrophilic polyethersulfone (PES) membrane, these 25mm syringe filters handle high particulate content liquids without clogging. The graded 0.7um prefilter stage captures sediment and grit upstream, protecting the 0.22um PES membrane and allowing smooth, low-force syringe operation even on viscous and heavily loaded samples. Housed in clear polypropylene with a Female Luer Lock inlet and Male Luer Slip outlet, each filter provides an effective filtration area of 4.63 cm2 and operates up to 75 psi and 90 C.
Key PES Membrane Characteristics
- Naturally hydrophilic PES membrane wets readily for fast filtration of aqueous and organic solutions.
- Two graded glass fiber prefilter layers (0.7um) remove sediment upstream to prevent premature clogging.
- Final 0.22um PES membrane delivers fine clarification with low protein and drug binding.
- Multilayer design processes substantially more sample volume than a single-layer membrane filter.
- Supports filtration of viscous and heavily sedimented samples for a clean final filtrate.
Key Construction Characteristics
- Clear polypropylene housing for sample visibility and broad chemical compatibility.
- Female Luer Lock inlet and Male Luer Slip outlet (Luer-Lok/Luer Slip) connections.
- Nonsterile, supplied 50 filters per pack.
- 25mm membrane diameter with a 30mm housing diameter and 4.63 cm2 effective filtration area.
- Maximum operating pressure of 75 psi and maximum operating temperature of 90 C.
The graded multilayer design maintains consistent flow across difficult sample types, reducing the need for multiple filters and minimizing the force required during processing. By capturing particulates progressively, the prefilter stages preserve the integrity of the 0.22um membrane and protect downstream instrumentation. The result is reliable clarification and dependable sample recovery across demanding analytical workflows.
- Color
- Transparent
- Connection Type
- Luer-Lok/Luer Slip
- Construction
- Multilayer (graded glass fiber prefilter + PES membrane)
- Diameter
- 25mm
- Filtration Area
- 4.63 cm2
- Inlet Connection
- Female Luer Lock
- Material
- Polyethersulfone (PES)
- Maximum Operating Pressure
- 75 psi
- Maximum Operating Temperature (°C)
- 90
- Outlet Connection
- Male Luer Slip
- Pack Count
- 50
- Pore Size (µm)
- 0.7/0.22
- Pre-filter Pore Size
- 0.7
- Prefilter (Yes/No)
- Yes
- Prefilter Material
- Glass Fiber (GF/F)
- Sterility
- Nonsterile
- Wettability
- Hydrophilic
- High-Particulate Sample Clarification The graded glass fiber prefilter layers separate sediment and grit so heavily loaded liquids can be clarified in a single pass.
- Viscous Sample Filtration The low-force multilayer design allows smooth syringe operation on viscous and difficult samples larger than typical single-membrane filters can handle.
- HPLC and Analytical Sample Prep The fine 0.22um PES membrane removes particulates from samples to protect chromatography columns and instrumentation.
- Environmental Sample Processing The robust prefilter stages manage turbid environmental and field samples that would quickly clog a standard syringe filter.
- Downstream Membrane Protection Upstream glass fiber prefiltration extends the life of fine membranes and reduces consumable use in multi-step workflows.
- Aqueous and Organic Solution Filtration The hydrophilic PES membrane and polypropylene housing support filtration of both aqueous and organic solvents.