PTFE Membrane Filters (w/out Substrate), 5.00 um, 90mm, Nonsterile, 100/Pk SKU: SF18124

PTFE Membrane Filters - SF18124

Precision-manufactured hydrophobic membrane with a verified 5.0 pore structure delivers consistent retention performance across demanding laboratory filtration workflows. Verified 5.0 pore distribution across the hydrophobic membrane surface guarantees batch-to-batch consistency in particle capture and analyte passage. Lot-level verification of pore size, flow rate, and physical dimensions ensures that membrane performance remains predictable when scaling from method development to routine analysis.

Material Specifications

• Hydrophobic membrane surface provides a reliable barrier for air venting and gas filtration, preventing aqueous breakthrough under normal operating conditions.
• Temperature stability exceeding 260°C makes PTFE the preferred membrane for hot gas sampling and elevated-temperature solvent filtration.
• Require pre-wetting with alcohol before filtering aqueous solutions.
• Excellent for filtering aggressive acids, bases, and non-aqueous solvents.
• Packaged without sterilization for applications where downstream sterility is achieved by other means or is not a process requirement.

Transitioning from qualitative screening to quantitative gravimetric analysis requires a membrane with documented tare weight consistency, and the manufacturing tolerances above ensure that your blank values remain within acceptable limits. For this application, 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)

≥1.0 psi (IPA, 25°C)

Color

White

Diameter

90mm

Extractables

Very Low

Filtration Area

63.62cm²

Flow Rate

≥0.6 mL/min/cm²

Grid (Yes/No)

No

Material

Polytetrafluoroethylene (PTFE)

Maximum Operating Temperature (°C)

120°C

Membrane Thickness (µm)

≥140um

Pack Count

25

pH Range

1-14pH

Pore Size (µm)

5

Sterility

Nonsterile

Sterilization

Autoclave

Weight

0.27

Wettability

Hydrophobic

• Off-Gas Analysis - Filters exhaust gases from fermentation vessels, protecting analyzers from moisture and foam while passing metabolic gases.
• 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.
• Headspace Analysis - Protects gas chromatography injectors by filtering volatile organic samples without extracting background contaminants.
• Cryogenic Filtration - Retains integrity at sub-zero temperatures, making it ideal for filtering liquid nitrogen or chilled reaction solvents.
• Aerosol Venting - Acts as a hydrophobic barrier in disc holders, preventing moisture entry while allowing sterile air to pass into tanks.