PTFE Hydrophilic Membrane Filters, 0.22 um, 90mm, Nonsterile, 100/Pk SKU: SF13842

PTFE Membrane Filters - SF13842

Precision-manufactured hydrophobic membrane with a verified 0.22 pore structure delivers consistent retention performance across demanding laboratory filtration workflows. Manufactured to exacting specifications, reproducible separation characteristics define the membrane structure, protecting downstream instruments and preserving sample integrity throughout the filtration process. In practice, each membrane disc reflects a manufacturing standard where retention characteristics, physical integrity, and dimensional accuracy are verified before release.

Material Specifications

• Permanently hydrophobic and chemically inert, PTFE resists degradation from virtually every solvent, acid, and base encountered in laboratory applications.
• Unmatched solvent resistance allows PTFE to process chlorinated hydrocarbons, ketones, and strong oxidizers that destroy other membrane chemistries.
• Near-zero extractable levels ensure PTFE membranes contribute no measurable background to mass spectrometry or trace analytical workflows.
• Require pre-wetting with alcohol before filtering aqueous solutions.
• Packaged without sterilization for applications where downstream sterility is achieved by other means or is not a process requirement.

Air monitoring and stack emissions sampling demand a filter medium that withstands the conditions at your collection point. The material properties above define that operating envelope. To that end, 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. Make the decision for consistency and reliability, ensuring that your laboratory maintains its reputation for high-quality, error-free output.

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

Bubble Point (psi)

≥18.9 psi (IPA, 25°C)

Color

White

Diameter

90mm

Extractables

Very Low

Filtration Area

63.62cm²

Flow Rate

≥27 mL/min/cm²

Grid (Yes/No)

No

Grid Color

50

Incompatibility

63.59cm²

Material

Polytetrafluoroethylene (PTFE)

Maximum Operating Temperature (°C)

120°C

Pack Count

100

pH Range

1-14pH

Pore Size (µm)

0.22

Sterility

Nonsterile

Sterilization

Autoclave

Support Material

PP

Weight

1.08

Wettability

Hydrophobic

• Headspace Analysis - Protects gas chromatography injectors by filtering volatile organic samples without extracting background contaminants.
• Bio-fluid Degassing - Allows gas to escape from microfluidic channels while retaining aqueous liquids, preventing air locks in the system.
• 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.
• Aerosol Venting - Acts as a hydrophobic barrier in disc holders, preventing moisture entry while allowing sterile air to pass into tanks.
• Cryogenic Filtration - Retains integrity at sub-zero temperatures, making it ideal for filtering liquid nitrogen or chilled reaction solvents.