English
The pore folding filter cartridge is a high-performance filter cartridge that uses deep filtration or membrane filtration technology to fold specific material filter membranes through precision processes.
1、 Core Features
High precision and high efficiency
Accurate interception: By relying on a uniform microporous structure, it is possible to achieve physical interception with a precision range from 0.1 microns to 1.0 microns or even wider, which can efficiently remove impurities such as particles, bacteria, colloids, etc. from liquids or gases.
High filtration efficiency: For specific particle sizes, the retention efficiency can reach over 99.9% (such as sterilization grade filters), ensuring the purity of downstream fluids.
Ultra high flux and long lifespan
Folding design: The unique wave shaped folding process achieves a very large filtering area in a limited space, which is 3-10 times larger than ordinary filters of the same size.
High throughput: A large effective area means lower flow resistance, allowing for extremely high fluid throughput at lower pressure differentials.
High pollutant holding capacity: The expanded filtration area provides a huge space for pollutant containment, making the filter less prone to rapid clogging, significantly extending its service life, and reducing replacement frequency.
Superior materials and compatibility
Multiple material selection: Filter membrane materials with different characteristics can be selected according to different application needs
Polypropylene (PP): Economical and versatile, with wide chemical compatibility, commonly used for pre filtration or general fine filtration.
Polyether sulfone (PES): With good hydrophilicity, high flux, and low protein adsorption, it is widely used for sterilization and filtration of biopharmaceuticals and sterile preparations.
Nylon: hydrophilic, strong, suitable for filtering organic solvents and alkaline solutions.
Polytetrafluoroethylene (PTFE): Strong chemical resistance and hydrophobicity, can be used for filtering highly corrosive solvents, strong acids and alkalis, and gas sterilization.
Wide compatibility: Combining different support layers and sealing ring materials, it can adapt to harsh working conditions ranging from strong acids and alkalis to various organic solvents.
High strength structure
Multi layer support: usually composed of inner and outer protective layers (polypropylene or non-woven fabric) and a central support tube (such as polypropylene or stainless steel), ensuring that the filter element does not deform, collapse or short-circuit under high pressure difference, and maintaining stable filtration performance.
Verifiability and reliability
Integrity testing: Especially for sterilization grade filter cartridges, integrity verification can be carried out through standard bubble point testing, diffusion flow testing, or pressure holding testing before and after leaving the factory and use, ensuring the reliability of filtration and traceability between batches. This is a legal requirement for drug safety production.
2、 Main functions
Precise removal of particulate matter
Function: Deeply intercept fine particles, rust, sediment, colloids, etc. suspended in liquids or gases.
Application: Ultra pure water terminal polishing, chemical reagent purification, hydraulic oil purification in the electronics industry.
Microbial control and sterilization
Function: Use pore size (such as 0.22 μ m, 0.45 μ m) to intercept bacteria, fungi, and other microorganisms, achieving a sterile state.
Application: Terminal sterilization and filtration of injections, vaccines, and biological products; Sterilization of fermentation using air; Cold sterilization of food and beverages (such as beer, juice).
Clarification and Purification
Function: Remove turbid substances from the solution, improve product clarity and glossiness, and protect downstream precision equipment.
Application: Clarification of raw materials and intermediates in the pharmaceutical industry; Purification of syrup and edible oil in the food industry; Filtering of photosensitive film developer solution.
Separation and Grading
Function: By combining filter cartridges of different accuracies, achieve graded separation or recovery of substances with different particle sizes.
Application: Catalyst recovery, cell collection, particle grading.
Protect downstream equipment
Function: As a terminal security filter, it prevents fine particles from entering sensitive equipment such as chromatography columns, analytical instruments, nozzles, reverse osmosis membranes, etc., avoiding blockage and damage.
Application: End protection for almost all precision manufacturing processes.
3、 Typical application areas
Biopharmaceuticals: Cell culture medium, buffer solution, purified water, water for injection (WFI), product terminal sterilization filtration.
Microelectronics: Precision filtration of ultrapure water (UPW) systems, photoresist, etching solutions, and CMP slurries.
Food and beverage: clarification and cold sterilization of alcoholic beverages, fruit juices, mineral water, and edible oils.
Chemical and petrochemical industries: refining of high-purity chemicals, solvents, catalysts, and purification of process gases.
Laboratory: mobile phase filtration, sample preparation, sterile operation.
In summary, the core value of microporous folding filter lies in its exquisite physical structure, which achieves "high efficiency, precision, reliability, and economy" in filtration efficiency. It is not only a simple filtering tool, but also a key technical barrier to ensure process safety, improve product quality, and meet strict regulatory standards. When selecting, it is necessary to accurately match the material and accuracy of the filter element based on the filtering object, process conditions (pressure, temperature, pH), and required standards (such as sterility, no heat source).
