PTFE Membrane, TE Range (TE 38), 5.0um Pore Size, 90mm Circle (25 pcs) SKU: 10411116

PTFE Membrane Filters - 10411116

The Whatman 10411116 combines a controlled pore size distribution with low extractable levels, ensuring the data accuracy that sensitive analytical methods require. Additionally, precision membrane geometry balances retention sharpness with sustainable flow rates, minimizing the pressure buildup that leads to premature filter replacement. On this basis, controlled production conditions produce membranes with documented pore size distribution and thickness tolerances, supporting method reproducibility across multiple filter lots.

Material Specifications

• Excellent for filtering aggressive acids, bases, and non-aqueous solvents.
• Unmatched solvent resistance allows PTFE to process chlorinated hydrocarbons, ketones, and strong oxidizers that destroy other membrane chemistries.
• Require pre-wetting with alcohol before filtering aqueous solutions.
• Temperature stability exceeding 260°C makes PTFE the preferred membrane for hot gas sampling and elevated-temperature solvent filtration.
• Permanently hydrophobic and chemically inert, PTFE resists degradation from virtually every solvent, acid, and base encountered in laboratory applications.

Reproducible particle counting and size distribution analysis start with a membrane surface that captures particles uniformly — the pore consistency documented above ensures your counts reflect the sample, not random variation in the filter. In particular, 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)

4.4psi (IPA)

Color

white

Diameter

90mm

Extractables

very low

Filtration Area

63.62cm²

Flow Rate

15 L (Air)

Grid (Yes/No)

No

Material

Polytetrafluoroethylene (PTFE)

Maximum Operating Pressure

Holder-dependent

Maximum Operating Temperature (°C)

120°C

Membrane Thickness (µm)

165um

Pack Count

25

pH Range

1-14

Pore Size (µm)

5

Sterility

Nonsterile

Sterilization

Autoclavable at 121°C for 30 mins

Support Material

Polypropylene Backing

Wettability

Hydrophobic

• 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.
• Bio-fluid Degassing - Allows gas to escape from microfluidic channels while retaining aqueous liquids, preventing air locks in the system.
• Headspace Analysis - Protects gas chromatography injectors by filtering volatile organic samples without extracting background contaminants.
• 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.