1.Polytetrafluoroethylene (PTFE) filter membrane
Type | Craftsmanship | Support | Pore diameter/MWCO(um/Da) | Thickness (um) | Porosity (%) | Working temperature(℃) | PH | Attributes | Filter media |
MF | UF | NF |
PTFE pure membrane | biaxial stretching | none | 1-10um | 0.1-1.0um | 0.05um | 6-40 | 75-88 | <150 | 0-14 | hydrophobic | organic liquids, solvents |
- | >1000KDa | 600KDa | <100 | 1-13 | Hydrophilic | Aqueous liquid, acid and alkali |
PTFE Composite membrane | thermal lamination | PP | 1-10um | 0.1-1.0um
>1000KDa | 0.05um
500KDa | 120-200 | 70-85 | <90 | 1-13 | hydrophobic hydrophilic | Organic liquids, solvents, aqueous liquids, acids and bases |
PET | <120 | 1-8 |
PET & PE | <100 | 1-9 |
■Application industries
● PTFE pure membrane:
PFA mesh, ECTFE meltblown cloth and other fluorine nonwovens can be used as supports to manufacture perfluorinated filter membranes and perfluorinated filter elements, which are used for semiconductor chemical liquids, gases, and ultra-pure filtration in harsh working environments.
● PTFE hydrophilic composite membrane:
For general aqueous liquid filtration,
Based on different support materials, it is used for filtration of acid or alkaline liquids with a certain temperature and pH.
● PTFE hydrophobic composite membrane:
Used for conventional organic liquids and gas filtration,
Based on different support materials, used for filtration of certain temperature, pH, non-polar and polar solvents
2. Polyvinylidene fluoride (PVDF) filter membrane
| Type | Craftsmanship | support | Pore size/MWCO (um/Da) | Thickness (um) | Porosity (%) | Operating temperature (°c) | PH | Attributes | filter media |
MF | UF | NF |
PVDF pure membrane | cast film | none | 1.0-5.0um | 0.1-1.0um | 0.05um | 90-130 | 60-70 | <120 | 0-14 | hydrophobic | organic liquids, solvents |
- | >1000KDa | 600KDa | <100 | 1-13 | Hydrophilic | Aqueous liquid, acid and alkali |
PVDF Composite membrane | coating | PP | - | 0.1-0.3um >1000KDa | - | 120-200 | 55-65 | <100 | 1-13 | hydrophobic Hydrophilic
| Organic liquids, solvents, aqueous liquids, acids and bases |
| PET | <100 | 1--8 |
■Application industries
● PVDF pure membrane:
PFA mesh, ECTFE melt-blown cloth and other fluorine non-woven fabrics can be used as supports to manufacture perfluorinated filter membranes and filter elements, which are used for semiconductor chemical liquids, gases, and ultra-pure filtration in harsh working environments.
It has good adsorption properties for proteins and nucleic acids and can be used as a transfer membrane for immunoblotting.
● PVDF hydrophilic composite membrane:
For general aqueous liquid filtration,
Based on different support materials, it is used for filtration of acid or alkaline liquids at a certain temperature and pH.
● PVDF hydrophobic composite membrane:
Used for high viscosity organic liquids, gas filtration,
Based on different support materials, used for filtration of certain temperature, pH, and non-strongly polar solvents
3. Polyethersulfone (PES) filter membrane
type | Craftsmanship | support | Pore size/MWCO (um/Da) | Thickness(um) | Porosity (%) | Operating temperature (°c) | PH | Attributes | filter media |
MF | UF | NF |
PES pure membrane | cast film | none | 1--10um | 0.1-1.0um | 0.02-0.05um | 100-120 | 60-70 | <90 | 2--12 | Hydrophilic | organic, water-based |
>1000KDa | 300-600KDa |
■Application industries
100% PES, FDA grade, extremely low extractables, high hydrophilicity, contact angle 35°. No support material is used, no fibers and media fall off. Low protein adsorption, no impact or interference,
● Can be used for liquid filtration, sterilization, and heat source/endotoxin removal in the pharmaceutical and food industries.
● Semiconductor ultra-pure filtration.
4. Nylon filter membrane
type | Craftsmanship | support | Pore size/MWCO (um/Da) | Thickness (um) | Porosity (%) | Operating temperature (°c) | PH | Attributes | filter media |
MF | UF | NF |
PA66 pure membrane | cast film | none | - | - | 0.05um | 30-130 | 60-70 | <90 | 2-13 | Hydrophilic | organic, water-based |
600KDa |
PA66 composite film | cast film | PET | 1.0-10um | 0.1-0.3um >1000KDa | - | 120-200 | 55-65 | <90 | 2-13 | Hydrophilic | organic, water-based |
■Application industries
● Nylon pure membrane:
100% PA66, FDA grade, extremely low extractables, no impact or interference.
High hydrophilicity, contact angle 35°.
It is positively charged and has good adsorption properties to negatively charged particles and colloids.
Can be used as a transfer membrane for immunoblotting.
● Nylon composite membrane:
Used for filtration of conventional aqueous liquids and organic liquids,
Based on different support materials, it is used for alkaline liquid and solvent filtration at a certain temperature and pH.
5.UHMW-POF (Polyolefin) filter membrane
type | Craftsmanship | support | Pore size/MWCO (um/Da) | thickness (um) | Porosity (%) | Operating temperature (℃) | PH | Attributes | filter media |
MF | UF | NF |
U-POF pure membrane | hot film casting Two-way stretch | none | *>=10um | 0.1-0.3um >1000KDa | 0.05um 600KDa | 10-65 | 50-60 | <100 | 1-13 | Hydrophilic | Aqueous liquids, acids, bases |
hydrophobic | organic liquids, solvents |
wet cast film Two-way stretch | none | *>=10um | 0.1um 1000KDa | 0.025-0.05um 350-600KDa | 10-40 | 40-60 | <100 | 1-13 | Hydrophilic | Aqueous liquids, acids, bases |
hydrophobic | organic liquids, solvents |
flash spinning thermal lamination | none | 1-3um | - | - | 120-180 | 40-60 | <120 | 1-13 | hydrophobic | Aqueous liquids, acids, bases organic liquids, solvents |
*MF aperture>=10um, using laser drilling process, the shape of the hole and channel, aperture, porosity, and film thickness can be customized.
■Application industries
100% ultra-high molecular weight polyolefin, high strength, no support materials, and good stiffness. It replaces fluorine membrane and is cost-effective. It can withstand higher working pressure, the accuracy does not decrease, and the flow rate is larger.
● U-POF hydrophilic membrane:
For general aqueous liquid filtration,
Based on different support materials, it is used for filtration of acid or alkaline liquids at a certain temperature and pH.
● U-POF hydrophobic membrane:
Used for conventional organic liquids and gas filtration,
Based on different support materials, used for filtration of certain temperature, pH, and non-strongly polar solvents
6. PET (polyester) precision filtration membrane
type | Craftsmanship | support | Pore size/MWCO (um/Da) | thickness (um) | Porosity (%) | Operating temperature (°c) | PH | Attributes | filter media |
MF | UF | NF |
PET pure film | Nuclear pore etching | none | 1.0-50um | 0.2-1.0um >1000KDa | - | 8-90 | 15-25 | <100 | 2-9 | hydrophobic/ hydrophilic | organic, water-based |
PET composite film | thermal lamination | PET | 1.0-50um | 0.2-1.0um >1000KDa | - | 100-200 | 15-25 | <100 | 2-9 | hydrophobic/ hydrophilic | organic, water-based |
■Application industries
● PET pure film:
Standard circular holes, aperture tolerance <10%, compared to membranes manufactured by other processes, have a higher interception accuracy and high efficiency in intercepting target substances. Whether it is a single particle size or a range of two particle sizes ,.
● PET hydrophilic composite membrane:
For general aqueous liquid filtration,
Based on different support materials, it is used for filtration of acidic liquids at a certain temperature and pH.
● PET hydrophobic composite film:
Used for conventional organic liquids and gas filtration,
Based on different support materials, used for filtration of certain temperature, pH, and non-strongly polar solvents
