polyethylene membrane filter

Item Parameter (Typical)

Material Polypropylene (PP), Polyethylene (PE), PTFE, PEEK (optional)

Filtration Precision 0.01 μm (ultrafiltration/microfiltration) to 200 μm (coarse filtration)

Pore Size Range 0.01–200 μm (customizable upon request)

Pore Volume 30%–70% (material and process dependent)

Specific Surface Area Medium–High (pore structure dependent)

Outer Diameter × Length (Common) φ25/φ32/φ62 mm × 5″/10″/20″/40″ (customizable)

Connection Type Open-end, threaded, quick-connect, flanged, etc.

Operating Temperature PP/PE: Ambient to approx. 80–100°C; PTFE: Up to 150°C; PEEK: Up to 250°C

Maximum Working Pressure (Recommended) 0.5–6 bar (Depends on material and construction; confirm per product datasheet)

Recommended Pressure Drop ≤0.2–0.5 bar (Depends on flow rate and pore size)

Recommended Line Speed/Flow Rate Depends on filter element pore size, length, and operating conditions (Flow rate curve provided upon customization)

Chemical Resistance Good tolerance to most strong acids, strong alkalis, and organic solvents (May vary slightly by material)

Sterilization Methods High-temperature steam, ethylene oxide, gamma radiation (depending on material compatibility)

Service Life Reference Washable and reusable or disposable; lifespan affected by contaminants and cleaning frequency

- Surface Layer: Porous sintered layer (gradient pore structure available to enhance retention efficiency and permeability)

- Intermediate Layer: Functional Gradient Layer (large pores → small pores, enhancing retention efficiency and reducing clogging)

- Support Layer/Skeleton: Rigid Core (providing mechanical strength, preventing collapse)

- End Caps/Seals: Injection-molded end caps, embedded seals (O-rings, gaskets), diverse connection types

- Visible Structural Features: Uniform pore size, interconnected channels, no fiber shedding

- Superior chemical resistance: Outperforms metal or fibrous media against most corrosive media (depending on material)

- Structural stability: High mechanical strength, pressure resistance, fracture resistance, minimal deformation

- Uniform pore size, precise retention: Sintering process controls pore distribution for precision filtration

- Cleanable/reusable: Backwashable, chemically cleanable, or ultrasonically cleanable under suitable conditions

- No Fiber Shedding: Non-fibrous structure suitable for applications requiring high particulate cleanliness

- High Permeability: Excellent pore connectivity enables high volumetric flow rate and low pressure drop

- Sterilizable: Certain materials withstand steam/radiation sterilization for pharmaceutical/biotech applications

- Routine Inspection: Regularly check differential pressure (ΔP), visual cracks, and end cap seal integrity

- Cleaning Methods:

- Backflushing/Backwashing: Suitable for large or removable cartridges; perform low-pressure backwash before increasing pressure

- Chemical Soaking: Immerse in appropriate cleaning solution (alkaline, acid, or organic solvent) based on contaminant type

- Ultrasonic Cleaning: Effective for stubborn deposits; control power and duration to prevent damage

- High-temperature steam/sterilization: Used for sterilization or disinfection when material permits;

- Drying and storage: Thoroughly rinse residual chemicals after cleaning. Air-dry at low temperature or oven-dry. Store sealed in a clean, dry environment after drying.

- Replacement timing: Replace when cleaning fails to restore original flow rate, sustained excessive pressure drop, cartridge damage, or material aging.

- Precautions: Avoid severe mechanical impact, exceeding material temperature/pressure limits, or prolonged contact with incompatible solvents

- Water Treatment: Pre-ultrafiltration, membrane protection, industrial circulating water, wastewater pretreatment

- Chemical Industry: Acid/alkali filtration, solvent filtration, precision filtration of process media

- Pharmaceuticals & Biotechnology: Culture media, pre-treatment of water for injection (materials must comply with regulations)

- Food & Beverage: Liquid clarification, filtration of oil-containing/suspended-matter fluids

- Electronics & Semiconductors: Ultrapure water, chemical filtration, gas filtration

- Plating & Surface Treatment: Reflux solution filtration, polishing solution filtration

- Laboratory & Analysis: Sample pretreatment, gas purification

- Material Selection: PP, PE, PTFE, PEEK, etc.

- Filtration Precision: 0.01 μm to 200 μm

- Dimensions/Connections: Custom lengths, diameters, end fittings (quick-connect, flange, threaded, etc.)

- Structural Design: Single-layer or multi-layer gradient, reinforced skeleton, core reinforcement

- Surface Treatment/Coating: Hydrophilic/hydrophobic modification, specialized functionalization

- Certifications & Documentation: Material compliance certificates, test reports, cleanliness verification available upon request; FDA/USP compliance support (customer confirmation required)

- Packaging & Labeling: Customized dust-free packaging, batch numbering, QR code traceability per client specifications

Q1: What chemicals can sintered plastic filter elements withstand?

A1: Chemical resistance varies by material. PP/PE exhibits good tolerance to most acids, alkalis, and aqueous solutions but limited resistance to strong oxidizing agents and certain organic solvents; PTFE offers the best resistance, withstanding nearly all chemicals; PEEK resists high temperatures and organic solvents. Provide medium composition and temperature before confirmation.

Q2: Can they withstand high-temperature sterilization?

A2: Depends on the material. PP/PE typically withstand steam up to ~100°C, while PTFE and PEEK tolerate higher temperatures. Refer to the maximum operating temperature and manufacturer's instructions for specific products.

Q3: How do I select the appropriate filtration precision?

A3: Choose based on downstream process requirements for particle size or microbial content. Common guidelines: 0.1–1 μm for protective membranes or precision equipment; 0.2 μm or finer for terminal microbial retention. Consider flow rate and pressure drop.

Q4: Can it be cleaned and reused? What is its lifespan?

A4: Cleanable sintered cartridges can be reused under proper operating conditions. Lifespan depends on contaminant type, cleaning frequency, and chemical conditions. Establish maximum differential pressure limits and cleaning cycles. Disposable options can be produced as needed.

Q5: How to address high pressure drop?

A5: First inspect for blockage. If cleanable, follow cleaning procedures. Replace if persistent cleaning fails or structural damage occurs. During selection, increase filter area or use larger pore sizes to reduce pressure drop.

Q6: Can particles shed and affect downstream processes?

A6: The sintered body forms a continuous solid structure with no fiber shedding. Flushing is recommended before initial use to remove manufacturing residues (if present).

Q7: Can it be used for gas filtration?

A7: Yes, particularly for gas filtration requiring chemical or temperature resistance. However, specialized design based on gas flow rate and pressure drop is necessary.

Q8: What testing or certification documents are required?

A8: Common documents include Material Test Reports (MTR), cleanliness testing, integrity testing, and corrosion/chemical resistance testing. Pharmaceutical/food applications may require FDA, USP, or other compliance documentation—advance consultation is necessary.

Q9: What are the minimum order quantities and lead times?

A9: This depends on whether the product is standard or custom. Standard parts are typically available in small batches with short lead times (days to two weeks). Custom parts have lead times based on design and certification requirements, usually 2–6 weeks. Specific details are subject to supplier quotations.

Q10: How can I provide parameters for quick selection?

A10: Please provide:

- Medium type

- Temperature

- Working pressure

- Required filtration precision

- Recommended flow rate (L/min or m³/h)

- Connection method

- Special requirements (sterilization, certifications, etc.)

If available, include process flow diagrams or site photos.

If needed, I can:

- Assist with preliminary selection and calculate recommended specifications based on your specific operating conditions (medium composition, temperature, flow rate, and pressure drop requirements)

- Create concise promotional copy or technical specification templates suitable for product manuals or web pages;

- Draft technical inquiry templates for customer quotations.

Please let me know which service you'd like me to proceed with (e.g., providing detailed parameters for a specific model, performing selection based on operating conditions, creating product specification copy, etc.).