Hydrophobic PTFE Membrane Filters, 1.0um, 33mm, w/out Substrate, Nonsterile 200/Pk SKU: SPEC20125

PTFE Membrane Filters - SPEC20125

Precision-manufactured hydrophobic membrane with a verified 1.0 pore structure delivers consistent retention performance across demanding laboratory filtration workflows. Designed for laboratory performance, quality-controlled manufacturing ensures the filtration medium delivers the retention efficiency and throughput that demanding laboratory protocols require. As a result, controlled production conditions produce membranes with documented pore size distribution and thickness tolerances, supporting method reproducibility across multiple filter lots.

Material Specifications

• Require pre-wetting with alcohol before filtering aqueous solutions.
• Hydrophobic construction enables filtration of aggressive organic solvents without the membrane swelling or degradation that affects hydrophilic alternatives.
• Near-zero extractable levels ensure PTFE membranes contribute no measurable background to mass spectrometry or trace analytical workflows.
• Thermal stability of the membrane material allows safe operation at temperatures up to 120°C without degradation of retention characteristics or dimensional integrity.
• Temperature stability exceeding 260°C makes PTFE the preferred membrane for hot gas sampling and elevated-temperature solvent filtration.

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. To that end, 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. 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)

≥7.3 psi (IPA, 25°C)

Color

White

Diameter

33mm

Extractables

Very Low

Filtration Area

8.55cm²

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)

1

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.
• 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.
• 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.
• Headspace Analysis - Protects gas chromatography injectors by filtering volatile organic samples without extracting background contaminants.