Micro-porous ePTFE for laboratory filtration
In laboratory environments where sample integrity is non-negotiable, Huzhou Kaili's Micro-porous ePTFE (expanded Polytetrafluoroethylene) membranes provide the ultimate filtration solution. Naturally inert and exceptionally uniform, our ePTFE films are designed to handle the most aggressive solvents and corrosive reagents without leaching contaminants or degrading.
Produced in our 3,000m² facility in the heart of the Yangtze River Delta fluoromaterial cluster, these membranes are engineered for precision venting, liquid clarification, and air monitoring applications.
| Performance Metric | Standard | Laboratory Grade Value |
| Pore Size Range | Bubble Point / Porometry | 0.1μm, 0.22μm, 0.45μm, 1.0μm |
| Water Entry Pressure | ISO 811 | > 100 kPa (Pore size dependent) |
| Airflow Rate | ISO 9237 | 2 – 50 L/min/cm² @ 1 bar |
| Thickness | Micrometer | 15μm – 100μm |
| Operating Temp | Thermal Analysis | -190°C to +260°C |
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Core Technical Advantages for the Lab
- Universal Chemical Compatibility: Resistant to nearly all laboratory reagents, including strong acids (Nitric, Sulfuric), concentrated bases, and organic solvents (HPLC grade). It remains stable from pH 0 to 14.
- Absolute Particle Retention: Our proprietary expansion process creates a 3D "tortuous path" nodal structure, ensuring high-efficiency capture of particulates while maintaining excellent flow rates.
- Naturally Hydrophobic: Effectively separates aqueous and non-aqueous phases. Our membranes block liquid water while allowing gases to pass, making them ideal for protection of vacuum pumps and sensor venting.
- High Thermal Resistance: Capable of withstanding autoclave sterilization and high-temperature filtration cycles up to 260°C without losing structural integrity.
- Ultra-Low Extractables: Manufactured from 100% virgin ePTFE with no binders, surfactants, or plasticizers, ensuring zero interference with sensitive analytical results (LC/MS or GC/MS).
The Huzhou Kaili Advantage
As a specialized manufacturer under the Kaili Advanced Materials Group, we offer B2B partners:
- Direct Customization: We can adjust pore size, thickness, and air permeability to meet your specific laboratory hardware requirements.
- Strategic Connectivity: Located in Zhejiang, only 1.5 hours from Shanghai, we provide rapid global shipping for technical samples and bulk membrane rolls.
- Specialized Finishing: Our facility excels in the coating, finishing, and customization of high-performance fabrics and films using advanced fluoropolymers and silicones.
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Our Factory
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