Tisch
PTFE Syringe Filters, 5.0um, 25mm, Luer-Lok/Luer Slip, Sterile, 100/Pk SKU: SF18251

Polytetrafluoroethylene (PTFE) Syringe Filters - SF18251

Featuring hydrophobic PTFE membrane technology with 5.0µm pore size in pre-sterilized packaging for efficient prefiltration and coarse particle removal from aggressive solvents. Standard 25mm diameter filters deliver exceptional 240ml flow rates while protecting downstream fine filters in multi-stage aseptic systems. Polypropylene housing construction withstands pressures up to 87psi, ensuring reliable performance in sterile applications.

Key Polytetrafluoroethylene (PTFE) Membrane Characteristics

• Hydrophobic membrane design effectively prefilters organic solvents, acids, and bases without chemical degradation
• Coarse 5.0µm pore size removes large particles, precipitates, and visible contaminants from sample solutions
• Pre-sterilized by gamma irradiation ensures contamination-free filtration for critical aseptic applications
• Superior chemical resistance from strong carbon-fluorine bonds maintains integrity in aggressive solvent systems
• Membrane thickness of 80-140µm provides optimal flow characteristics for high-throughput sample processing

Key Construction Characteristics

• Polypropylene housing ensures broad chemical compatibility with organic and inorganic solvents
• Standard 25mm diameter offers 4.08cm² filtration area for efficient processing of routine sample volumes
• Holdup volume of 100µl balances sample recovery with practical handling for standard applications
• Luer-Lok/Luer Slip dual connection system accommodates all standard syringe configurations

SF18251 filters maximize your sterile prefiltration efficiency with an impressive 240ml flow rate, significantly reducing processing time for large-volume samples. Pre-sterilized packaging eliminates preparation steps while your samples maintain complete sterility at operating temperatures up to 60°C. Bubble point specification of 1.45psi using absolute ethyl alcohol confirms consistent pore structure for reproducible sterile prefiltration results.

For more information about chemical and material compatibility, please review our Chemical Compatibility Chart.

Bubble Point (psi)

1.45(absolute ethyl alcohol ）

Burst Pressure (psi)

87psi.

Connection Type

Luer-Lok/ Luer Slip

Construction

PP

Diameter

25mm

Filtration Area

4.08cm²

Flow Rate

240ml

Holdup Volume

100μL

Incompatibility

Aqueous samples without rewetting

Material

Polytetrafluoroethylene (PTFE)

Maximum Operating Pressure

87psi

Maximum Operating Temperature (°C)

60°C

Membrane Thickness (µm)

80-140μm

Pack Count

100

Pore Size (µm)

5

Sterility

Sterile

Sterilization

Autoclave: 121°C for 30 minutes/ Gamma: 5kg, for 8 hours

Volume Throughput (ml)

100ml

Wetability

Hydrophobic

• Sterile Coarse Prefiltration - Removes large particles from samples, protecting expensive sterile 0.22µm downstream filters
• Viscous Sample Clarification - Prefilters sterile high-viscosity oils, polymers, and concentrated biological solutions
• Cell Culture Media Preparation - Removes precipitates from sterile serum-containing media before fine filtration
• Sterile Precipitate Removal - Clarifies crystallized solutions from organic synthesis under aseptic conditions
• Pharmaceutical Prefiltration - Removes undissolved excipients from sterile drug formulations before final filtration
• Environmental Sample Processing - Prefilters sterile soil and water extracts for contamination-free analysis