PTFE Membrane Filters, 3.0um, 47mm, Nonsterile, 100/Pk SKU: SF17922

PTFE Membrane Filters - SF17922

Precision-manufactured hydrophobic membrane with a verified 3.0 pore structure delivers consistent retention performance across demanding laboratory filtration workflows. Central to its design, a uniform PTFE matrix maintains its rated 3.0 cutoff under the pressures and flow conditions encountered during routine laboratory filtration. For this reason, precision manufacturing ensures that each membrane disc delivers the rated retention, flow rate, and surface consistency that analytical and microbiological methods require.

Material Specifications

• Water-repellent membrane surface sustains airflow in venting applications while providing a defined barrier against liquid passage.
• Permanently hydrophobic and chemically inert, PTFE resists degradation from virtually every solvent, acid, and base encountered in laboratory applications.
• Temperature stability exceeding 260°C makes PTFE the preferred membrane for hot gas sampling and elevated-temperature solvent filtration.
• Packaged without sterilization for applications where downstream sterility is achieved by other means or is not a process requirement.
• Require pre-wetting with alcohol before filtering aqueous solutions.

Environmental monitoring programs where sample-to-sample comparability determines trend validity benefit directly from the lot-level consistency of these membranes, removing the filter as a variable in your long-term data sets. To address this, 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.

Color

White

Diameter

47mm

Extractables

Very Low

Filtration Area

17.35cm²

Flow Rate

≥10 mL/min/cm²

Grid (Yes/No)

No

Grid Color

100

Incompatibility

17.34cm²

Material

Polytetrafluoroethylene (PTFE)

Maximum Operating Temperature (°C)

120°C

Membrane Thickness (µm)

150-310um

Pack Count

100

pH Range

1-14pH

Pore Size (µm)

3

Sterility

Nonsterile

Sterilization

Autoclave

Support Material

PP

Weight

0.49

Wettability

Hydrophobic

• Aggressive Solvent Prep - Filters extremely corrosive acids and bases in reusable glass holders, offering unmatched chemical inertness in the lab.
• 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.
• Bio-fluid Degassing - Allows gas to escape from microfluidic channels while retaining aqueous liquids, preventing air locks in the system.
• Trace Metal Sampling - Used in clean-room environments to filter samples for ICP-MS, ensuring no metallic leachables contaminate the results.
• Headspace Analysis - Protects gas chromatography injectors by filtering volatile organic samples without extracting background contaminants.