PTFE Membrane Filters, 2.0um, 37mm w/ PP Substrate, Nonsterile, 100/Pk SKU: SF18117

PTFE Membrane Filters - SF18117

The Tisch SF18117 protects sensitive instrumentation and sample integrity by providing reliable particulate removal with minimal analyte adsorption or background interference. Optimized for laboratory use, a uniform PTFE matrix maintains its rated 2.0 cutoff under the pressures and flow conditions encountered during routine laboratory filtration. Consequently, consistent surface properties across the full membrane area support uniform particle capture and reliable results in gravimetric, microscopic, and culture-based analytical workflows.

Material Specifications

• Permanently hydrophobic and chemically inert, PTFE resists degradation from virtually every solvent, acid, and base encountered in laboratory applications.
• Require pre-wetting with alcohol before filtering aqueous solutions.
• Thermal stability of the membrane material allows safe operation at temperatures up to 120°C without degradation of retention characteristics or dimensional integrity.
• Excellent for filtering aggressive acids, bases, and non-aqueous solvents.
• Bulk format reduces per-unit packaging waste and cost, appropriate for routine particulate removal and clarification where aseptic handling is not specified.

Scaling from development to routine production requires membrane consistency at every lot, and the documented specifications provide the reproducibility needed to validate the filtration step once. To meet this need, for aggressive solvent recovery and waste stream filtration, PTFE's inertness allows you to reclaim expensive solvents through filtration without introducing extractable contamination from the filter medium into your recovered material. Elevate the quality of your analytical data today by standardizing on a filtration product built to meet the exact specifications of your applications.

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

Bubble Point (psi)

≥2.9 psi (IPA, 25°C)

Color

White

Diameter

37mm

Extractables

Very Low

Filtration Area

10.75cm²

Flow Rate

≥127 mL/min/cm²

Grid (Yes/No)

No

Material

Polytetrafluoroethylene (PTFE)

Maximum Operating Temperature (°C)

120°C

Membrane Thickness (µm)

≥15um

Pack Count

100

pH Range

1-14pH

Pore Size (µm)

2

Sterility

Nonsterile

Sterilization

Autoclave

Support Material

PP

Weight

0.49

Wettability

Hydrophobic

• Off-Gas Analysis - Filters exhaust gases from fermentation vessels, protecting analyzers from moisture and foam while passing metabolic gases.
• PM2.5 Air Monitoring - The regulatory standard for weighing fine air particulates, ensuring minimal moisture absorption affects the final mass.
• 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.
• Cryogenic Filtration - Retains integrity at sub-zero temperatures, making it ideal for filtering liquid nitrogen or chilled reaction solvents.
• Headspace Analysis - Protects gas chromatography injectors by filtering volatile organic samples without extracting background contaminants.