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 a 5.0µm pore size in pre-sterilized packaging for efficient prefiltration of aggressive solvents. The coarse pore structure removes large particulates and precipitates, effectively protecting downstream analytical systems and finer membrane stages. Polypropylene housing withstands pressures up to 87psi, ensuring reliable performance across diverse solvent systems.

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 prevents the introduction of contaminants during critical laboratory 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 facilitate contamination-free handling with pre-sterilized packaging that is ready for immediate use. The coarse pore structure processes high-volume samples rapidly while removing particles that would otherwise compromise finer filtration stages. Process samples at temperatures up to 60°C without membrane degradation, while the 1.45psi bubble point verification (using absolute ethyl alcohol) confirms consistent pore structure across your filtration runs.

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)

5.0

Sterility

Sterile

Volume Throughput (ml)

100ml

Weight

0.88

Wetability

Hydrophobic

• Coarse Prefiltration - Removes large particles and precipitates that would clog downstream 0.22µm filters in multi-stage processing workflows
• Viscous Sample Processing - Handles high-viscosity oils, polymers, and concentrated solutions where coarse particle removal precedes fine filtration
• Cell Culture Prep - Removes visible precipitates from serum-containing media before final filtration, extending membrane life in tissue culture
• Precipitate Removal - Clarifies crystallized solutions from organic synthesis, where aggressive solvents require chemically resistant filtration
• Pharmaceutical Compounds - Removes undissolved excipients from formulations before downstream processing in small molecule drug development
• Environmental Extracts - Prefilters particulate-laden soil and water samples, protecting analytical equipment from coarse contamination