PTFE Membrane Filters (w/out Substrate), 5.00 um, 47mm, Nonsterile, 100/Pk SKU: SF18114

PTFE Membrane Filters - SF18114

The Tisch SF18114 protects sensitive instrumentation and sample integrity by providing reliable particulate removal with minimal analyte adsorption or background interference. Reproducible separation characteristics define the membrane structure, protecting downstream instruments and preserving sample integrity throughout the filtration process. For this reason, controlled production conditions produce membranes with documented pore size distribution and thickness tolerances, supporting method reproducibility across multiple filter lots.

Material Specifications

• Temperature stability exceeding 260°C makes PTFE the preferred membrane for hot gas sampling and elevated-temperature solvent filtration.
• Water-repellent membrane surface sustains airflow in venting applications while providing a defined barrier against liquid passage.
• Bulk packaging format provides cost-effective access for high-volume laboratories performing non-critical filtration and sample preparation.
• Near-zero extractable levels ensure PTFE membranes contribute no measurable background to mass spectrometry or trace analytical workflows.
• Unmatched solvent resistance allows PTFE to process chlorinated hydrocarbons, ketones, and strong oxidizers that destroy other membrane chemistries.

Microbial enumeration methods require complete retention at rated pore size and a growth-supporting surface. The membrane specifications above confirm both requirements for your culture-based workflows. PTFE's thermal stability across a wide operating range means you can filter hot solvents and process elevated-temperature samples without the membrane softening or pore distortion that limits thermoplastic alternatives. Take control of your sample preparation variables and ensure that your data reflects the true nature of your work, rather than the quality of your consumables.

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

Bubble Point (psi)

≥1.0 psi (IPA, 25°C)

Burst Pressure (psi)

87psi.

Color

White

Diameter

47mm

Extractables

Very Low

Filtration Area

17.35cm²

Flow Rate

≥0.6 mL/min/cm²

Grid (Yes/No)

No

Incompatibility

Aqueous samples without rewetting

Material

Polytetrafluoroethylene (PTFE)

Maximum Operating Temperature (°C)

120°C

Membrane Thickness (µm)

≥140um

Pack Count

100

pH Range

1-14pH

Pore Size (µm)

5

Sterility

Nonsterile

Sterilization

Autoclave

Weight

0.49

Wettability

Hydrophobic

• PM2.5 Air Monitoring - The regulatory standard for weighing fine air particulates, ensuring minimal moisture absorption affects the final mass.
• Cryogenic Filtration - Retains integrity at sub-zero temperatures, making it ideal for filtering liquid nitrogen or chilled reaction solvents.
• Trace Metal Sampling - Used in clean-room environments to filter samples for ICP-MS, ensuring no metallic leachables contaminate the results.
• Aggressive Solvent Prep - Filters extremely corrosive acids and bases in reusable glass holders, offering unmatched chemical inertness in the lab.
• Headspace Analysis - Protects gas chromatography injectors by filtering volatile organic samples without extracting background contaminants.
• Aerosol Venting - Acts as a hydrophobic barrier in disc holders, preventing moisture entry while allowing sterile air to pass into tanks.