0.22 Micron Hydrophobic Laminated PTFE Membranes For Anti-Bacterial
Filters
The microporous PTFE membranes we offer are produced by expanding
the PTFE (fine powder resin) into a 3-dimensional web-like
structure called ePTFE which creates billions of microscopic pores.
This structure utilizes the inherent hydrophobic (water-resistant)
and non-stick nature of PTFE to allow removal of particulate
captured on the membrane surface. These hydrophobic PTFE membrane
filters are laminated onto nonwoven polypropylene backing for
improved dimensional stability and increased mechanical strength,
preventing the membrane from curling or losing its shape, enabling
further aggressive processing and convenient use in most disc
filters.
Due to broad chemical compatibility and inherently hydrophobic
properties, PTFE Laminated Membrane Filters are suitable for a wide
variety of applications including clarification of compatible
non-aqueous solvents, phase separations investigations, venting
including water repellency, and environmental air sampling.
Our laminated ePTFE membranes provide medical device manufacturers
and research laboratories with a consistent, temperature and
chemical compatible barrier to microbes and particulate matter. The
optimal combination of air flow and water entry pressure adds value
to most device designs. These membrane filters are generally
offered in roll formats, but flat sheets and circles can be
customized to meet individual customer's applications. Pore sizes
are selectable and can be tailore-made, the most popular spec is
0.22 micron which is a perfect choice for medical use against
bacteria and aerosol contaminants, an effective barrier against
airborne particles, microorganisms and aqueous fluids, providing a
safe and hygienic solution for both patient and operator.
Specificatons Available
| ePTFE with support backing | 0.10 µm | 0.22 µm | 0.45 µm | 1.0 µm |
| Flow Rate (air) (L/min/cm2) | 2.5 | 4.5 | 7.5 | 17 |
| Bubble Point | >20.3 psi | >14.1 psi | >8.5 psi | >4.3 psi |
| Thickness | 130 µm | 130 µm | 120 µm | 90 µm |
| Max. Operating Temp | 130°C | 130°C | 130°C | 130°C |
Features of Laminated PTFE Membranes
- Hydrophobic
- Polypropylene or PET support material for increased strength
- High air flow rate
- High pressure resistance
- High mechanical strength
- Temperature resistant up to 130°C
- Resistant to most aggressive acids, alkalis, and solvents, pH
tolerance ranging from 1-14.
Applications
Laminated PTFE membranes offer a range of benefits when it comes to
filtering and sterilizing gases and liquids. Their chemical
resistance, durability, and hydrophobic characteristics make them
ideal for use in demanding applications in the biotechnology,
medical and pharma industries. For example, the hydrophobic
characteristics makes PTFE particularly useful in applications
involving air venting and aqueous aerosols filtration. In venting
applications, the membrane's hydrophobicity helps to prevent the
passage of airborne particles, ensuring a clean and safe working
environment. Due to their high thermal resistance, laminated PTFE
membranes are suitable for use in industrial and commercial
settings where high temperatures may be present. And PTFE membranes
are compatible with most aggressive acids, alkalis, and solvents,
which makes them particularly effective for use with aggressive
solvents, liquids, and gases where other types of membranes may not
perform as well.
- General/sterile filtration
- Special corrosive solvents filtration.
- Infusion therapy
- Pharmaceutical filtration
- Bacterial isolation
- HPLC sample preparation
- Aerosol sample handling
- Air venting and gas filtration
