PTFE Membrane Filter, 2um unSupported 47mm, 100 pieces/Pk SKU: SPEC20238

PTFE Membrane Filters - SPEC20238

The Tisch SPEC20238 combines a controlled pore size distribution with low extractable levels, ensuring the data accuracy that sensitive analytical methods require. Building on this foundation, verified 2.0 pore distribution across the hydrophobic membrane surface guarantees batch-to-batch consistency in particle capture and analyte passage. Consequently, 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

• Unmatched solvent resistance allows PTFE to process chlorinated hydrocarbons, ketones, and strong oxidizers that destroy other membrane chemistries.
• Excellent for filtering aggressive acids, bases, and non-aqueous solvents.
• 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.
• 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. The non-stick surface of PTFE minimizes sample adhesion during filtration, improving your recovery of viscous or high-value samples where every microliter of filtrate matters to downstream yield calculations. 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

47mm

Extractables

Very Low

Filtration Area

17.35cm²

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

100

pH Range

1-14pH

Pore Size (µm)

2

Sterility

Nonsterile

Sterilization

Autoclave

Weight

0.49

Wettability

Hydrophobic

• 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.
• PM2.5 Air Monitoring - The regulatory standard for weighing fine air particulates, ensuring minimal moisture absorption affects the final mass.
• Off-Gas Analysis - Filters exhaust gases from fermentation vessels, protecting analyzers from moisture and foam while passing metabolic gases.
• Headspace Analysis - Protects gas chromatography injectors by filtering volatile organic samples without extracting background contaminants.
• Aerosol Venting - Acts as a hydrophobic barrier in disc holders, preventing moisture entry while allowing sterile air to pass into tanks.