The RCP100-20EPP is a large-specification, high-precision water treatment filtration product engineered with advanced Enhanced Polypropylene (EPP) membrane technology, exclusively optimized for low-flux, high-stability precision purification in industrial, municipal and professional laboratory water treatment scenarios. This model features an expanded filtration area design paired with a high-performance EPP membrane core, and a reinforced industrial-grade structural housing that delivers exceptional filtration accuracy and long-term operational reliability for medium and large-scale water treatment systems requiring strict effluent quality standards. It is fully compatible with standard industrial large-diameter water treatment pipeline setups, supports modular parallel and series operation for flexible system configuration, and has excellent corrosion and anti-pollution performance to adapt to complex raw water quality conditions with targeted pre-treatment. Easy to install, operate and maintain, the RCP100-20EPP serves as a premium core filtration solution for high-precision water treatment projects, realizing ultra-pure water preparation, high-standard raw water purification and industrial process water refinement with low operational energy consumption and stable long-term performance.

The RCP100-20EPP boasts an ultra-high nominal filtration precision of 0.005 microns, with a uniformly microporous EPP membrane surface featuring a nanoscale pore size distribution that eliminates filtration blind spots and micro-impurity leakage even under long-term low-flux continuous operation. This extreme precision filtration capability can effectively intercept and remove submicron suspended solids, colloidal particles, bacteria, viruses, algae spores, micro-particle impurities and macromolecular organic pollutants in raw water, ensuring that the effluent water quality stably meets the national and industrial ultra-pure water standards (Grade I/II). The filtration precision remains absolutely consistent with slight fluctuations in inlet water turbidity, temperature and impurity content, providing an unshakable guarantee for subsequent high-precision water treatment processes, direct use in precision manufacturing and professional laboratory water supply.

Under standard operating conditions (25℃, rated working pressure), the RCP100-20EPP is designed with a pure water flux of 20 L/m²·h—a low-flux optimization tailored for high-precision purification scenarios that prioritizes effluent quality over throughput. The product’s optimized low-resistance water flow channel design and high-selectivity EPP membrane material effectively eliminate flux instability caused by pressure changes and water quality fluctuations; within a reasonable range of operating conditions (water temperature 5℃-35℃, inlet water turbidity ≤5 NTU), the flux remains ultra-stable with an attenuation rate of ≤3% per month during long-term continuous operation. This low and stable flux performance ensures sufficient contact time between water and the membrane surface for thorough impurity interception, fully meeting the high-precision water demand of medium and large-scale industrial production, municipal water supply refinement and professional scientific research institutions without compromising purification accuracy for water output.

The RCP100-20EPP delivers industry-leading salt rejection performance under standard operating parameters, with a 99.0% rejection rate for monovalent inorganic salt ions and a 99.8% rejection rate for divalent inorganic salt ions—far exceeding the performance of conventional EPP membrane products of the same specification. The ultra-dense selective separation layer of the enhanced EPP membrane material, combined with the low-flux operating design, forms a double barrier for salt ion interception, effectively blocking the passage of various salt ions, inorganic impurities and dissolved solids while ensuring the smooth penetration of water molecules. The salt rejection rate remains almost unchanged (variation ≤0.2%) even with slight fluctuations in inlet water salinity (≤2000 mg/L) and operating pressure, making the product an ideal choice for ultra-pure water preparation, high-standard brackish water desalination and industrial process water softening in industries with extreme salt content limits such as semiconductor manufacturing, precision electronic processing and pharmaceutical raw material production.

During normal continuous operation at rated low flux and standard water temperature, the pressure drop of the RCP100-20EPP is strictly controlled within the ultra-low range of 0.08-0.12 MPa. The product adopts a highly optimized low-resistance internal structural design, including a smooth wide-diameter water inlet/outlet channel, a high-porosity porous support layer and a streamlined filtration core layout that minimizes water flow resistance in the low-flux filtration process. This ultra-low pressure drop performance significantly reduces the energy consumption of the water treatment system’s booster pump, lowers the overall operational energy cost of the system to the minimum, and avoids membrane damage caused by excessive pressure accumulation. The pressure drop has no obvious increase during the normal service life; a slight rise (≤0.03 MPa) is only observed when regular cleaning is required, which is easy to identify and handle, ensuring the long-term stable and energy-efficient operation of the entire water treatment system.

The Molecular Weight Cutoff of the RCP100-20EPP is accurately calibrated at 500 Da (Daltons), an ultra-precise setting that enables the selective interception of small and medium molecular weight impurities in water while allowing only water molecules and trace beneficial small molecules to pass through—even under long-term low-flux operating conditions. This ultra-low MWCO performance can effectively block organic small molecules, colloidal substances, low-molecular-weight polymers, protein impurities and polysaccharides with a molecular weight higher than 500 Da, and is specially suitable for the high-precision separation and purification of water containing low-molecular-weight organic pollutants in industrial precision manufacturing and scientific research scenarios. The accurate MWCO design perfectly combines low-flux operation with ultra-high purification precision, ensuring the strictest effluent quality standards and meeting the differentiated high-precision water quality requirements of various professional low-flux application scenarios.

The core filtration membrane of the RCP100-20EPP is a multi-layer composite enhanced EPP membrane with a total thickness of 170 μm, consisting of a 30 μm ultra-dense selective separation layer (the core functional layer for ultra-high precision filtration and ultra-high salt rejection), a 110 μm high-strength porous support layer (providing super strong mechanical support for the membrane under long-term low-flux and pressure-stable working conditions) and a 30 μm anti-fouling protective layer (reducing membrane surface pollution and mechanical wear). The multi-layer thickness and material optimization design are exclusively tailored for low-flux, high-precision operation: the ultra-dense selective separation layer is made of high-purity EPP material with nanoscale pore formation, ensuring uncompromised ultra-high filtration and salt rejection performance; the high-strength porous support layer adopts a reinforced cross-linked structure, enhancing the membrane’s resistance to pressure and water flow impact, and avoiding membrane deformation or damage during long-term continuous operation; the anti-fouling protective layer is modified with special hydrophilic and anti-adhesion technology, which effectively reduces the adsorption of pollutants on the membrane surface and maintains the long-term high permeability of the membrane.

Under standard operating conditions and strict adherence to the regular maintenance and cleaning schedule, the recommended replacement cycle of the RCP100-20EPP is 36-48 months—an extended service life designed for low-flux, high-stability operating scenarios, far longer than conventional EPP membrane filtration products. The actual replacement cycle can be flexibly adjusted according to the actual inlet water quality and operating frequency: for raw water with ultra-low impurity content, low salinity and regular professional deep cleaning (1-2 times per quarter), the replacement cycle can be extended to 48 months; for raw water with moderate impurity content and continuous low-flux operation, the recommended replacement cycle is 36 months to ensure the stable operation of ultra-high filtration precision, salt rejection rate and MWCO performance. The main indicators for replacement include a significant decrease in flux (≥15%), a sharp rise in pressure drop (≥0.05 MPa) or a noticeable decline in salt rejection rate (≥0.5%); the product’s modular integrated design makes the replacement process simple and fast, requiring no professional tools, and a single operator can complete the entire replacement operation within 40 minutes, minimizing the downtime of the high-precision water treatment system.

The RCP100-20EPP has a number of outstanding product features that make it a leading choice in the high-precision low-flux water treatment market, combining advanced enhanced EPP membrane technology with large-specification structural design for professional precision purification scenarios. First, it adopts food-grade and semiconductor-grade dual-certified enhanced EPP membrane materials, which are non-toxic, odorless, free of heavy metal leaching and have no secondary pollution to water quality, fully meeting the extreme safety and purity requirements of semiconductor manufacturing, pharmaceutical production and professional laboratory water treatment. Second, it features ultra-high precision & low-flux stability: the 0.005 micron ultra-fine filtration precision and 20 L/m²·h optimized low flux design realize thorough impurity interception and long-term operational stability, breaking the limit of conventional EPP membranes in high-precision purification. Third, it has industry-leading salt rejection performance: the 99.0% monovalent and 99.8% divalent salt rejection rate meets the ultra-pure water standard of precision manufacturing and scientific research, providing a reliable guarantee for high-standard water quality demand. Fourth, it features ultra-low pressure drop & energy efficiency: the 0.08-0.12 MPa ultra-low operating pressure drop significantly reduces system energy consumption, realizing energy-saving and environmentally friendly operation of high-precision water treatment systems. Fifth, the product has excellent pressure resistance and structural stability, able to operate stably under a wide working pressure range of 0.5-1.0 MPa, and resistant to short-term pressure fluctuations and water flow impact without membrane deformation or core damage, adapting to the strict operational requirements of high-precision water treatment systems. Sixth, it supports large-specification modular design & flexible configuration: the expanded filtration area design meets the medium and large-scale high-precision water demand, and multiple units can be connected in parallel or series to realize flexible expansion of system processing capacity and purification precision, adapting to different project scale requirements. Seventh, it has enhanced anti-fouling performance & extended service life: the membrane surface hydrophilic modification technology reduces pollutant adsorption, and the low-flux operating design slows down membrane fouling, realizing a 36-48 months extended replacement cycle and effectively reducing system maintenance and replacement costs. Eighth, it has wide adaptive compatibility: after targeted simple pre-treatment, it can be used for the high-precision purification of surface water, groundwater, tap water and industrial secondary water with different quality characteristics, and is fully compatible with various high-precision water treatment process systems such as RO and EDI.

Benefiting from its core advantages of large-specification, ultra-high precision, low-flux stability and industry-leading salt rejection performance, the RCP100-20EPP is widely applicable to various medium and large-scale industrial precision manufacturing, scientific research, municipal high-standard water supply and professional medical water treatment fields that require strict effluent quality and low-flux stable operation. In the industrial precision manufacturing field, it is the core filtration product for ultra-pure water preparation in semiconductor chip manufacturing, microelectronic component processing, optoelectronic device production and precision instrument manufacturing, providing ultra-pure water that meets the Grade I ultra-pure water standard for production processes. In the pharmaceutical and biological engineering field, it is used for high-precision purification of pharmaceutical raw material water, injection water and biological reagent preparation water, meeting the GMP quality standards of the pharmaceutical industry and ensuring the safety and purity of pharmaceutical production. In the scientific research and laboratory field, it is applied to the ultra-pure water supply system of national key laboratories, scientific research institutions, university laboratories and third-party testing institutions, providing high-purity water for chemical analysis, biological experiment, material research and precision detection. In the municipal high-standard water supply field, it is used for the deep refinement of tap water in high-end residential quarters, central business districts and international communities, improving the drinking water quality to meet the international high-standard drinking water requirements. In the medical and health field, it is applied to the high-precision water treatment system of tertiary hospitals, specialized medical institutions and biological medicine research centers, providing pure water for medical equipment cleaning, clinical testing and medical research. In addition, this model is also suitable for the high-precision purification of industrial process water in aerospace, nuclear energy and other high-end manufacturing fields, as well as the water quality refinement of pure water production lines in the food and beverage industry with strict purity requirements.

In summary, the RCP100-20EPP is a high-end, large-specification, high-precision water treatment filtration product that integrates advanced enhanced EPP membrane technology, optimized low-flux structural design and humanized functional design for professional precision purification scenarios. As a flagship large-specification model of the EPP membrane series for low-flux high-precision applications, it breaks the performance limit of conventional EPP membranes in ultra-high precision filtration and salt rejection, realizing a 0.005 micron ultra-fine filtration precision, 99.8% divalent salt rejection rate and 500 Da ultra-low MWCO while maintaining a 20 L/m²·h stable low flux and 0.08-0.12 MPa ultra-low pressure drop. Its outstanding advantages such as ultra-high purification precision, industry-leading salt rejection performance, long-term operational stability, ultra-low energy consumption, extended service life (36-48 months) and flexible modular configuration not only ensure the strictest effluent quality standards for high-precision water treatment projects, but also effectively reduce the overall operation, maintenance and energy consumption costs of the system. The product’s large-specification design meets the medium and large-scale high-precision water demand, and its excellent compatibility with various high-precision water treatment processes (RO, EDI, etc.) makes it a versatile and reliable core filtration component for high-precision water treatment systems. Whether it is for ultra-pure water preparation in industrial precision manufacturing, high-standard water purification in pharmaceutical production, ultra-pure water supply in scientific research laboratories or municipal high-end drinking water refinement, the RCP100-20EPP can provide a customized, efficient and ultra-reliable one-stop high-precision filtration solution. Adhering to the design concept of precision, stability, energy conservation and durability, this product can help users optimize high-precision water treatment processes, improve water resource utilization efficiency, and ensure the high quality and stability of production and research results, making it an irreplaceable ideal core filtration choice for various medium and large-scale high-precision low-flux water treatment application scenarios.

The RCP100-20EPP is a flagship large-specification high-precision model in the professional enhanced EPP membrane water treatment series, and the matching related products cover core filtration series models, special pre-filtration protection, professional deep cleaning agents, high-precision intelligent control systems and customized installation accessories, fully meeting the differentiated high-precision water treatment needs of different users and various low-flux application scenarios. For the same series core filtration products, the RCP080-20EPP is a medium-specification high-precision model with a reduced filtration area, suitable for small and medium-scale high-precision water treatment projects such as small laboratories and mini-type precision manufacturing workshops; the RCP120-20EPP is an extra-large-specification high-precision model with an expanded filtration area, designed for ultra-large-scale high-precision water treatment projects such as large semiconductor manufacturing bases and national key scientific research platforms. The RCP100-30EPP is a moderate-flux high-precision upgraded model with a 30 L/m²·h pure water flux, balancing high precision and moderate throughput for medium and large-scale high-precision water treatment projects with slightly higher water volume demands. In terms of matching pre-filtration products, the RCP-PRE06 EPP High-Precision Special Pre-Filter is specially designed for the high-precision EPP series, with a 1 μm ultra-fine coarse filtration precision and a large-flow water channel design, which can effectively remove fine particle impurities, sand and colloid in raw water, avoiding membrane fouling and damage caused by fine particles and extending the service life of the high-precision EPP membrane core by 20-25%. For professional cleaning products, the RCP-CLE06 EPP High-Precision Membrane Special Deep Cleaning Agent is a three-component high-efficiency cleaning agent, specially formulated for the pollution characteristics of high-precision EPP membranes under low-flux operation, which can quickly and effectively remove organic fouling, scale, microbial slime and low-molecular-weight organic deposits on the membrane surface without damaging the ultra-dense separation layer, restore the ultra-high filtration precision and salt rejection performance of the EPP membrane, and reduce the frequency of core replacement. In terms of intelligent control accessories, the RCP-CONT06 High-Precision Intelligent Operation and Monitoring Unit is perfectly matched with the high-precision EPP series, which can realize real-time and high-precision monitoring of key operating parameters such as flux, pressure drop, inlet/outlet water salinity, TDS, turbidity and temperature for a single or multiple parallel units, and support automatic alarm, automatic low-pressure backwashing, intelligent cleaning reminder and remote data transmission with millisecond-level response, greatly improving the automation level and operational stability of the high-precision water treatment system and reducing manual operation and maintenance costs. In addition, the RCP-ACC05 High-Precision EPP Special Installation Accessory Kit provides all the necessary high-pressure anti-leakage connectors, food-grade gaskets and fixed brackets for the RCP100-20EPP and other high-precision EPP series products, supporting quick installation and connection with different standard large-diameter high-precision water treatment pipelines, and ensuring the airtightness and stability of the pipeline connection to avoid secondary pollution. The RCP-BR04 Low-Pressure Precision Membrane Backwashing Pump is a special matching accessory for high-precision EPP filtration products, which can realize soft and efficient reverse backwashing of the membrane core with adjustable low pressure, further reduce membrane fouling, restore membrane permeability and extend the service life of the high-precision EPP membrane core by an additional 15-20% without damaging the ultra-dense separation layer. The RCP-MON03 High-Precision Multi-Parameter Water Quality Analyzer is a matching high-end accessory for the RCP-CONT06 unit, which can realize real-time and accurate detection of inlet and outlet water quality parameters such as TDS, conductivity, pH, ORP and dissolved oxygen with a detection accuracy of 0.01 level, and transmit data to the intelligent control unit in real time, realizing closed-loop high-precision monitoring and intelligent control of the entire high-precision water treatment system.