0.22 μm / 0.45 μm
13-142 mm diameter
Hydrophilic surface treatment
Low protein binding
Aqueous & biological filtration
Bulk supply available
Availability: In Stock
Hydrophilic PVDF Membrane Filter
Description
Hydrophilic PVDF membrane filters are specially modified polyvinylidene fluoride (PVDF) membranes designed for aqueous filtration applications.
Unlike standard hydrophobic PVDF membranes, hydrophilic PVDF membranes are pre-treated to improve water compatibility, making them ideal for biological samples, protein solutions, and laboratory aqueous filtration.
They combine the chemical resistance of PVDF with improved wettability and low protein binding performance.
What is a Hydrophilic PVDF Membrane Filter?
Hydrophilic PVDF membranes are made by surface modification of polyvinylidene fluoride (PVDF) to improve water wettability.
This modification allows the membrane to be used directly in aqueous solutions without pre-wetting agents, making it suitable for biological and analytical applications.
Key Features of Hydrophilic PVDF Membranes
- Naturally modified hydrophilic surface
- Excellent aqueous compatibility
- Low protein adsorption
- High chemical resistance (PVDF base material)
- High flow rate and stability
- Suitable for sterile and non-sterile filtration
Applications
- Protein solution filtration
- Biological sample preparation
- Buffer filtration
- Cell culture media filtration
- Pharmaceutical QC testing
- Analytical chemistry
- Aqueous laboratory filtration
Available Pore Sizes & Products
| Item Code | Description | Package |
| 11187201 | 0.22(μm), 13(mm) | 400pcs/pk |
| 11187202 | 0.22(μm), 47(mm) | 100pcs/pk |
| 11187203 | 0.22(μm), 90(mm) | 50pcs/pk |
| 11187204 | 0.22(μm), 142(mm) | 50pcs/pk |
| 11187208 | 0.45(μm), 13(mm) | 400pcs/pk |
| 11187209 | 0.45(μm), 47(mm) | 100pcs/pk |
| 11187210 | 0.45(μm), 90(mm) | 50pcs/pk |
| 11187211 | 0.45(μm), 142(mm) | 50pcs/pk |
Why Choose Hydrophilic PVDF Membranes?
Compared to standard hydrophobic PVDF membranes, hydrophilic PVDF offers:
- Direct use in aqueous solutions
- Reduced sample loss due to protein binding
- Improved compatibility with biological samples
- No pre-wetting required
- Maintains PVDF chemical resistance
Hydrophilic vs Hydrophobic PVDF Membrane
| Property | Hydrophilic PVDF | Hydrophobic PVDF |
| Water compatibility | Direct use | Requires wetting |
| Protein binding | Low | Medium |
| Best use | Aqueous solutions | Organic solvents |
| Applications | Biology, buffers | HPLC, solvents |
How to Choose PVDF Membrane Filter
Choose 0.22 μm if:
- Sterile filtration required
- Fine particle removal needed
Choose 0.45 μm if:
- General aqueous filtration
- Protein & buffer preparation
Choose diameter:
- 13 mm → syringe filtration
- 47 mm → lab standard filtration
- 90-142 mm → high-volume filtration
Frequently Asked Questions
What is hydrophilic PVDF membrane used for?
It is used for aqueous filtration such as protein solutions, buffers, and biological sample preparation.
Is hydrophilic PVDF better than hydrophobic PVDF?
Neither is better; hydrophilic PVDF is used for aqueous systems, while hydrophobic PVDF is used for organic solvents and gases.
Does hydrophilic PVDF membrane bind proteins?
It has low protein binding compared to many other membrane materials, making it suitable for biological applications.
Can hydrophilic PVDF filter sterile solutions?
Yes, especially 0.22 μm versions are commonly used for sterile aqueous filtration.
Do hydrophilic PVDF membranes need pre-wetting?
No, they can be used directly with aqueous solutions.
Technical Specifications
- Material: PVDF (surface-modified hydrophilic)
- Pore sizes: 0.22 μm, 0.45 μm
- Diameter: 13-142 mm
- Hydrophilicity: Pre-treated
- Protein binding: Low
- Applications: Aqueous filtration
- Sterilization: Autoclave / EtO / Gamma
Hydrophilic PVDF membrane filters provide an excellent balance of chemical resistance, low protein binding, and aqueous compatibility, making them ideal for modern laboratory and biological filtration workflows.
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