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Thumbnail Filmstrip of PTFE Syringe Filters w/ GF Prefilter, 0.7/0.22um, 25mm, Luer-Lok/Luer Slip, Nonsterile, 500/Pk Images
Featuring a multilayer construction that pairs two graded glass fiber (GF/F) prefilter layers with a final hydrophilic PTFE membrane, this 25mm syringe filter clarifies and finishes heavily loaded samples in a single pass. The graded 0.7um prefiltration stage captures sediment and grit upstream, while the 0.22um hydrophilic PTFE membrane delivers the final filtration. The device installs on a Female Luer Lock inlet and a Male Luer Slip outlet, and ships nonsterile in packs of 500.
Key PTFE Membrane Characteristics
- Naturally hydrophilic PTFE membrane wets readily with aqueous samples for consistent flow
- Final 0.22um pore size for fine clarification of finished samples
- Two graded glass fiber (GF/F) prefilter layers with 0.7um rating separate sediment and grit upstream
- Multilayer, no-clog design processes high particulate content liquids smoothly
- Broad chemical compatibility suited to aqueous and organic solutions
Key Construction Characteristics
- Clear polypropylene housing with a 30mm housing diameter and 25mm membrane diameter
- Female Luer Lock inlet and Male Luer Slip outlet (Luer-Lok/Luer Slip)
- Effective filtration area of 4.63 cm squared
- Withstands a maximum operating temperature of 90 degrees C and a maximum operating pressure of 75 psi
- Nonsterile, supplied 500 per pack
The graded prefilter stack lets one device replace three or more standard syringe filters, reducing the force required to push viscous or sediment-heavy samples. This delivers reliable throughput and clog-free filtration while preserving sample integrity through to the final 0.22um membrane.
- Color
- Transparent
- Connection Type
- Luer-Lok/Luer Slip
- Construction
- Multilayer (dual glass fiber prefilter with PTFE membrane)
- Diameter
- 25mm
- Filtration Area
- 4.63 cm²
- Inlet Connection
- Female Luer Lock
- Material
- Hydrophilic Polytetrafluoroethylene (PTFE)
- Maximum Operating Pressure
- 75 psi
- Maximum Operating Temperature (°C)
- 90
- Membrane Color
- Transparent
- Outlet Connection
- Male Luer Slip
- Pack Count
- 500
- Pore Size (µm)
- 0.22
- Pre-filter Pore Size
- 0.7
- Prefilter (Yes/No)
- Yes
- Prefilter Material
- Glass Fiber (GF/F)
- Sterility
- Nonsterile
- Wettability
- Hydrophilic
- Prefiltration of Heavily Loaded Samples Dual graded glass fiber layers separate sediment and grit from viscous or particulate-rich liquids before the final membrane.
- HPLC and UHPLC Sample Preparation The 0.22um hydrophilic PTFE membrane clarifies samples to protect analytical columns and instrumentation.
- Buffer and Reagent Clarification Hydrophilic PTFE wets readily with aqueous buffers to remove fine particulates ahead of analysis.
- Aqueous and Organic Solution Filtration Broad chemical compatibility supports filtration of both aqueous and alcohol-based solutions.
- Protein Aqueous Solution Processing The multilayer design handles protein-containing fluids while reducing clogging during processing.
- Environmental and Food Sample Prep High particulate loading capacity makes the device suited to turbid environmental and food/beverage samples.