PTFE Membrane Disc Filters, Laminated, 0.45um, 47mm, Nonsterile, 100/Pk
GVS SKU: 1215493

Featuring a hydrophobic polytetrafluoroethylene (PTFE) membrane laminated to a polypropylene support, this 0.45um, 47mm disc filter delivers durable, easy-to-handle filtration for chemically aggressive samples. The PTFE membrane is produced by expanding fine powder resin into a three-dimensional web-like structure that creates billions of microscopic pores, capturing particulate on the membrane surface while allowing air to pass freely. Supplied nonsterile in a pack of 100.

Key PTFE Membrane Characteristics

• Inherently hydrophobic, so it will not absorb moisture from air or gases, making it well suited to venting, phase separations, and aerosol sampling.
• Chemically compatible with strong acids and most aggressive solvents such as alcohols.
• Expanded PTFE structure captures particulate on the membrane surface while permitting easy air flow.
• Laminated PTFE can be used to filter aqueous solutions when prewetted with a low-surface-tension solvent such as methanol.
• Plain white, biologically inert media offering an optimal combination of air flow and water entry pressure.

Key Construction Characteristics

• PTFE membrane laminated to a polypropylene support for improved durability and easy handling.
• 47mm diameter disc with a 0.45um pore size.
• Nominal membrane thickness of 130um.
• Autoclavable up to 130 degrees C.
• Nonsterile, packaged 100 per pack.

This laminated PTFE disc maintains consistent particulate retention and reliable gas flow across demanding chemical and venting applications. The polypropylene backing provides mechanical strength that withstands handling without compromising the membrane, supporting repeatable results and sample integrity.

Color

White

Construction

PTFE membrane laminated to polypropylene support

Diameter

47mm

Grid (Yes/No)

No

Material

Polytetrafluoroethylene (PTFE)

Maximum Operating Temperature (°C)

130

Membrane Color

White

Membrane Thickness (µm)

130

Pack Count

100

Pore Size (µm)

0.45

Sterility

Nonsterile

Support Material

Polypropylene (PP)

Wettability

Hydrophobic

• Solvent and Acid Filtration The hydrophobic PTFE membrane provides extreme chemical compatibility for filtering strong acids and aggressive organic solvents.
• Air and Gas Venting Because the membrane will not absorb moisture from air or gases, it is ideal for vent filtration setups.
• Phase Separations The inherently hydrophobic media supports clean separation of aqueous and non-aqueous phases.
• Aerosol Sampling Surface capture of fine particulate makes the membrane suitable for collecting aerosols.
• Aqueous Filtration After Prewetting When prewetted with methanol, the laminated PTFE membrane can filter aqueous solutions.
• Sample Clarification The 0.45um pore size removes particulate from chemically aggressive samples prior to downstream analysis.