Product Introduction
This 1μm food-grade filter cartridge is a highly specialized precision filtration component engineered exclusively for the fine filtration of tea and coffee extracts, tailored to the stringent requirements of the beverage industry for clarification, impurity removal and flavor retention in tea and coffee concentrate processing. Crafted from 100% food-grade polypropylene (PP) raw materials that comply with FDA, EU 10/2011, national food safety standards (GB 14881) and beverage production quality norms, the cartridge adopts advanced high-precision spiral winding technology with a reinforced porous food-grade PP inner core and a dense, uniformly structured 1μm PP wire filter layer. It is dedicated to the efficient physical fine filtration of various tea extracts (green tea, black tea, oolong tea, herbal tea) and coffee extracts (roasted coffee, cold brew coffee, espresso concentrate), intercepting micro insoluble impurities including tea leaf fine residues, coffee ground particles, colloidal flocs, protein aggregates and micro suspended solids generated during extraction and brewing processes. The pure physical filtration process involves no chemical additives, no dissolution of harmful substances, no adsorption of natural flavor and aroma substances (tea polyphenols, caffeine, coffee oils), and no alteration to the extract’s original taste, color and nutritional composition—core characteristics for preserving the authentic flavor of tea and coffee products. With perfect compatibility with standard food-grade filter housings for beverage processing, stable 1μm high-precision filtration performance and adaptability to the viscosity and temperature characteristics of tea/coffee extracts, this cartridge is a core fine filtration component for tea and coffee beverage manufacturers, instant drink production enterprises and specialty coffee/tea processing facilities. It complies with the strict quality and safety control requirements of the beverage industry, effectively improves the clarity of tea and coffee extracts, prevents post-processing and storage sedimentation, and lays a solid foundation for the production of high-quality tea/coffee beverages, instant powders and concentrate products.
Filtration Precision
This filter cartridge is fixed with a 1μm absolute filtration precision, calibrated specifically for the micro impurity characteristics of tea and coffee extracts and the strict fine filtration requirements of tea/coffee beverage production. The 1μm high-precision filter layer is manufactured through a precise gap-calibrated winding process, ensuring uniform pore size distribution and no pore size deviation, which can stably and thoroughly intercept all insoluble impurities with particle sizes ≥1μm in tea and coffee extracts. These impurities include tea leaf fine cell residues, coffee ground micro particles, colloidal flocs formed by polyphenol-protein interaction, micro suspended solids from water sources, and tiny plant fiber debris—all of which are the main causes of turbidity, sedimentation and poor mouthfeel in tea/coffee products. The 1μm filtration precision is the optimal choice for the fine filtration of tea and coffee extracts: it is precise enough to remove all visible and micro insoluble impurities to achieve high clarity of extracts, while avoiding overly fine filtration that would cause blockage of the filter layer, excessive flux attenuation and unnecessary adsorption of beneficial flavor substances (e.g., coffee oils, tea essential oils). Under all normal operating conditions of tea/coffee extract processing (different extract viscosities, temperatures and concentrations), the filtration precision remains stable without attenuation, channeling or filter layer deformation, and strictly complies with the national beverage production quality standards and the internal fine filtration specifications of the tea/coffee industry, meeting the high-clarity requirements of finished tea/coffee beverages, instant products and concentrate products.
Flux
The flux performance of this 1μm food-grade filter cartridge is fully optimized for the physical properties of tea and coffee extracts (moderate viscosity, containing trace micro impurities), the 1μm high-precision filtration demand, and the continuous production characteristics of tea/coffee beverage processing lines. Under the standard operating conditions of 25-40℃ (optimal temperature for tea/coffee extract filtration) and 0.2MPa inlet pressure, the initial pure water flux of a single cartridge reaches 8-15 L/min—a high flux level matching its 1μm high-precision design, far exceeding the flux performance of traditional 1μm filtration components for beverage extracts. For actual tea and coffee extracts with different viscosities and concentrations (the key factors affecting flux), the stable operating flux maintains a consistent and practical level: for low-viscosity tea/coffee extracts (e.g., cold brew coffee extract, green tea extract) with a solid content of ≤5%, the stable flux is 6-12 L/min per cartridge; for medium-viscosity concentrated extracts (e.g., black tea concentrate, espresso extract) with a solid content of 5-15%, the stable flux is 4-8 L/min per cartridge, unaffected by the natural active substance content (tea polyphenols, caffeine) of the extracts. The dense 1μm filter layer with optimized pore structure and high-precision winding process effectively delays flux attenuation during continuous fine filtration, and the flux remains stable in the middle and early stages of use. Even with the gradual accumulation of micro insoluble impurities, there is no sudden drop in flux, avoiding the reduction of production efficiency of tea/coffee extract processing lines caused by excessive flux attenuation. In addition, the flux design fully considers the parallel use characteristics in medium-to-large flow tea/coffee extract filtration systems—multiple cartridges can be used in parallel in food-grade filter housing skids without mutual interference, which can flexibly expand the total filtration flow to meet the mass production needs of large-scale tea/coffee beverage manufacturers and instant drink production enterprises.
Salt Rejection Rate
As a 1μm food-grade physical fine filtration component for tea and coffee extracts based on the precise pore size interception principle, this filter cartridge is designed to remove micro insoluble impurities in extracts, and its core design concept is to fully retain all soluble natural flavor, aroma and nutritional substances (tea polyphenols, caffeine, coffee oils, amino acids, soluble sugars) that determine the authentic taste and quality of tea and coffee products. Therefore, its salt rejection rate is 0% under all normal tea/coffee extract processing operating conditions. It only intercepts tea leaf fine residues, coffee ground particles, colloidal flocs and other insoluble contaminants in extracts during 1μm fine filtration, and will not retain any soluble components in the extracts, including inorganic salt ions (potassium, sodium, calcium), soluble sugars, organic acids (tannic acid, chlorogenic acid), tea polyphenols, caffeine, coffee oils and amino acids—all of which are the core components forming the flavor, aroma and nutritional value of tea and coffee. This 0% salt rejection rate is a core performance characteristic of the cartridge for tea/coffee extract filtration: it strictly ensures that the soluble chemical composition, flavor substance ratio, taste and color of tea and coffee extracts remain completely unchanged after fine filtration, complying with the core quality requirement of the tea/coffee industry for “retaining authentic flavor while achieving high clarity”, and avoiding the loss of soluble active and flavor substances that are the core competitiveness of tea/coffee products. At the same time, the 0% salt rejection rate makes the cartridge not affected by the total dissolved solids (TDS) content and inorganic salt composition of tea/coffee extracts, and can be universally applied to the fine filtration of various tea and coffee extracts with different raw material sources, extraction processes and concentration levels.
Pressure Drop
The pressure drop design of this 1μm food-grade filter cartridge is fully optimized for the 1μm dense filter layer structure, the rated working pressure of food-grade filter housings for tea/coffee extract processing, the low-energy production requirements of the beverage industry, and the normal filtration pressure of tea/coffee processing lines (0.15-0.3MPa). It is designed to ensure safe, stable, low-consumption and high-precision fine filtration operation, without bringing additional pressure load to the extract delivery pump, filter housing system and subsequent tea/coffee processing equipment (concentration, filling, drying). Under the standard operating condition of 30℃ (average tea/coffee extract filtration temperature) and initial operation state (no impurity accumulation), the initial pressure drop of a single cartridge is strictly controlled within 0.015-0.03 MPa—far lower than the rated pressure loss of mainstream food-grade filter housings for beverage extract processing and tea/coffee filtration systems. This ultra-low initial pressure drop ensures that the tea/coffee extract filtration system can operate under normal production pressure without an additional high-pressure booster pump, effectively reducing the energy consumption of the fine filtration link, and avoiding the emulsification of coffee oils/tea essential oils and loss of volatile flavor substances caused by excessive filtration pressure, which is in line with the energy-saving and emission-reduction requirements of modern tea/coffee beverage production enterprises. With the progress of continuous fine filtration and the gradual accumulation of micro insoluble impurities in the 1μm filter layer, the pressure drop of the cartridge will increase steadily. The recommended maximum allowable pressure drop for tea and coffee extract fine filtration is 0.20 MPa, which is the critical pressure value for the filter housing system to maintain safe and stable operation, avoid extract leakage and ensure the normal progress of subsequent tea/coffee processing links (concentration, filling, instant powder production). When the pressure drop reaches this value, the cartridge needs to be replaced in a timely manner, which not only ensures the 1μm high-precision fine filtration effect of tea and coffee extracts, but also prevents the production line from being shut down due to excessive system pressure and affecting the continuous production of tea/coffee products.
Molecular Weight Cutoff (MWCO)
Combined with the fixed 1μm absolute filtration precision, food-grade safety design, dense filter layer structure and actual fine filtration demand of tea and coffee extracts, the molecular weight cutoff (MWCO) of this filter cartridge is precisely set at 50,000 – 200,000 Da. This MWCO range is perfectly matched with the 1μm filtration precision and the molecular weight characteristics of impurities and flavor substances in tea/coffee extracts, realizing targeted interception of macromolecular insoluble impurities while allowing all small and medium molecular weight soluble flavor, aroma and nutritional substances to pass through the filter layer smoothly. The 50,000-200,000 Da MWCO can effectively intercept macromolecular insoluble impurities in tea/coffee extracts including protein-polyphenol aggregates (molecular weight >100,000 Da), tea leaf/coffee ground cell debris aggregates (molecular weight >80,000 Da) and colloidal flocs (molecular weight >50,000 Da)—the main sources of turbidity and sedimentation in extracts. At the same time, this MWCO range ensures the unimpeded passage of all soluble core flavor and nutritional substances in tea/coffee extracts, such as caffeine (194 Da), tea polyphenols (200-400 Da), chlorogenic acid (354 Da), coffee oils (200-600 Da), soluble sugars (180-342 Da) and amino acids (75-200 Da). The high-precision spiral winding process and uniform pore size distribution ensure that the MWCO parameters remain stable without attenuation during the service cycle, even under long-term immersion in tea/coffee extracts with different temperatures, viscosities and concentrations, and no adsorption of small and medium molecular weight flavor substances occurs. This stable MWCO performance guarantees the consistent and reliable fine filtration effect of the cartridge, achieving both high clarity of extracts and complete retention of authentic flavor.
Molecular Weight Cutoff (MWCO)
Combined with the fixed 1μm absolute filtration precision, food-grade safety design, dense filter layer structure and actual fine filtration demand of tea and coffee extracts, the molecular weight cutoff (MWCO) of this filter cartridge is precisely set at 50,000 – 200,000 Da. This MWCO range is perfectly matched with the 1μm filtration precision and the molecular weight characteristics of impurities and flavor substances in tea/coffee extracts, realizing targeted interception of macromolecular insoluble impurities while allowing all small and medium molecular weight soluble flavor, aroma and nutritional substances to pass through the filter layer smoothly. The 50,000-200,000 Da MWCO can effectively intercept macromolecular insoluble impurities in tea/coffee extracts including protein-polyphenol aggregates (molecular weight >100,000 Da), tea leaf/coffee ground cell debris aggregates (molecular weight >80,000 Da) and colloidal flocs (molecular weight >50,000 Da)—the main sources of turbidity and sedimentation in extracts. At the same time, this MWCO range ensures the unimpeded passage of all soluble core flavor and nutritional substances in tea/coffee extracts, such as caffeine (194 Da), tea polyphenols (200-400 Da), chlorogenic acid (354 Da), coffee oils (200-600 Da), soluble sugars (180-342 Da) and amino acids (75-200 Da). The high-precision spiral winding process and uniform pore size distribution ensure that the MWCO parameters remain stable without attenuation during the service cycle, even under long-term immersion in tea/coffee extracts with different temperatures, viscosities and concentrations, and no adsorption of small and medium molecular weight flavor substances occurs. This stable MWCO performance guarantees the consistent and reliable fine filtration effect of the cartridge, achieving both high clarity of extracts and complete retention of authentic flavor.
Membrane Thickness
Aiming at the fixed 1μm high-precision fine filtration demand of tea and coffee extracts, the food safety requirements of the beverage industry, the viscosity characteristics of extracts and the continuous industrial filtration characteristics, the filter layer (wound dense food-grade PP wire layer) thickness of this 1μm food-grade filter cartridge is specially designed as 5-7 mm (a fixed thickness matching the 1μm filtration precision), and the total wall thickness of the cartridge (including reinforced porous food-grade PP inner core, 1μm dense filter layer and food-grade smooth anti-scouring outer protective layer) is 10-12 mm. The dimensional design fully complies with the standard filter cartridge specifications of the beverage processing industry, ensuring perfect installation compatibility with all mainstream 10/20/40-inch food-grade filter housings (304/316L stainless steel) for tea and coffee extract processing lines. The 5-7 mm dense filter layer is manufactured through a precise high-precision winding process with uniform 1μm pore size distribution, which balances three core performance requirements of 1μm fine filtration for tea/coffee extracts: ultra-high filtration precision to remove all micro insoluble impurities, excellent liquid permeability to ensure a practical and stable flux for production, and sufficient dirt-holding capacity to delay filter layer blockage and extend the service cycle. The reinforced porous food-grade PP inner core with an optimized thickness of 3-4 mm is made of high-strength food-grade PP material, with high compressive strength, uniform extract permeability and excellent structural stability. It provides a stable and non-deformable supporting structure for the outer 1μm dense filter layer under the working pressure of the filter housing system, avoiding the deformation or collapse of the inner core caused by the hydraulic impact of tea/coffee extract delivery, and preventing the pore size of the filter layer from changing due to structural deformation (which would lead to filtration precision attenuation). The food-grade smooth anti-scouring outer protective layer with a thickness of 0.5-0.6 mm is made of modified food-grade PP material, with excellent anti-scouring, anti-corrosion and temperature resistance (adapting to 0-80℃, the full temperature range of tea/coffee extract processing). It effectively prevents the filter layer from being scoured and damaged by the flow of tea/coffee extracts during continuous production, avoids the shedding of PP wire particles to ensure the safety and purity of extracts, and the smooth surface is easy to clean and sanitize before use without residue, complying with the strict hygiene control norms of the beverage industry for tea/coffee product production.
Replacement Cycle
The replacement cycle of this 1μm food-grade filter cartridge is determined according to the type of tea/coffee extract (tea/coffee, concentrated/normal), extract viscosity and concentration, raw material quality (tea leaf/coffee bean grade) and the continuous production load of the tea/coffee processing line, with strict compliance with the beverage industry’s food safety and quality control norms and strong on-site operability for tea/coffee beverage manufacturers. Under the conventional working condition (25-40℃, continuous filtration for 8-16 hours a day, extract solid content ≤10%, matching the rated flow of food-grade filter housings), the recommended replacement cycle for a single cartridge is 5-7 days—a scientific cycle balanced between filtration efficiency, dirt-holding capacity and flavor retention for 1μm fine filtration of tea/coffee extracts. If the processing line is handling medium-to-high concentration tea/coffee extracts (solid content >10%) (e.g., black tea concentrate, espresso concentrate with high coffee oil content) or low-grade raw materials with more fine residues (e.g., broken tea leaves, low-grade coffee grounds), the replacement cycle is shortened to 3-5 days, as the high solid content and more fine residues will accelerate the accumulation of impurities in the 1μm dense filter layer, leading to faster flux attenuation and pressure drop increase. For processing lines in 24-hour continuous full-load production (large-scale instant tea/coffee powder production enterprises), the replacement cycle is also uniformly shortened to 3-5 days to ensure the continuous stability of fine filtration effect and avoid the risk of filter layer blockage and flavor substance adsorption caused by long-term uninterrupted use. In addition, the replacement cycle must be adjusted according to the actual operating parameters of the tea/coffee extract filtration system: if the pressure drop of the filter housing system reaches the recommended maximum value of 0.20 MPa in advance, or the filtered extract has obvious turbidity, micro sediment or reduced flavor intensity, the cartridge should be replaced immediately regardless of the operating time. Timely replacement not only ensures the high clarity and purity of tea/coffee extracts, but also prevents microbial breeding caused by long-term immersion of the cartridge in nutrient-rich extracts, complying with the strict food safety control requirements of the tea/coffee beverage industry.
Features
- Fixed 1μm absolute filtration precision: Precisely manufactured with uniform 1μm pore size distribution, stably intercepts all insoluble impurities ≥1μm in tea/coffee extracts, achieves high clarity of extracts and prevents post-processing/storage sedimentation, the optimal precision for tea/coffee extract fine filtration.
- 100% food-grade PP raw material compliance: The whole cartridge is made of FDA/EU 10/2011 compliant food-grade PP raw materials, non-toxic, tasteless, no dissolution of harmful substances, no secondary pollution to tea/coffee extracts, fully meeting the strict food safety requirements of the beverage industry.
- 0% salt rejection rate for authentic flavor retention: Core 0% salt rejection rate design, only removing micro insoluble impurities without retaining any soluble flavor, aroma and nutritional substances (tea polyphenols, caffeine, coffee oils), strictly preserving the original taste, color and nutritional composition of tea/coffee extracts.
- Optimized MWCO for targeted filtration: Precisely set 50,000-200,000 Da MWCO, perfectly matching 1μm filtration precision, intercepts macromolecular insoluble impurities while allowing all core soluble flavor substances to pass through, realizing the dual goal of clarification and flavor retention.
- Balanced flux & low pressure drop: Optimized filter layer structure with ultra-low initial pressure drop (0.015-0.03 MPa) and practical stable flux for tea/coffee extracts, no additional booster pump required, reduces energy consumption and avoids flavor loss caused by excessive pressure.
- Universal compatibility with beverage filter housings: Fixed total wall thickness of 10-12 mm, complying with beverage industry standard filter cartridge specifications, perfectly compatible with all mainstream 10/20/40-inch 304/316L stainless steel food-grade filter housings, supporting parallel use for mass production.
- Reinforced structural stability for extract filtration: High-strength porous PP inner core and modified anti-scouring outer protective layer, with high compressive strength and temperature resistance (0-80℃), no deformation or filter layer shedding under hydraulic impact, ensuring long-term stable operation in extract processing.
- Pure physical filtration with no flavor adsorption: No chemical additives or adsorbents used, the dense PP filter layer has no adsorption of tea polyphenols, caffeine, coffee oils and other flavor substances, ensuring the authentic flavor of tea/coffee extracts.
- Hygienic design for tea/coffee production: Integrated injection molding food-grade end cover with excellent sealing performance, smooth anti-scouring outer surface without dead angles or residue, easy to clean, sanitize and sterilize, complying with strict beverage industry hygiene norms.
- Wide adaptability to tea/coffee extracts: Stable 1μm fine filtration performance for various tea extracts (green/black/oolong/herbal tea) and coffee extracts (roasted/cold brew/espresso), adapting to different extract temperatures (0-80℃), viscosities and concentrations, with strong on-site adaptability.
Application Fields
This 1μm food-grade filter cartridge is a specialized precision filtration component exclusively developed for the fine filtration of tea and coffee extracts, and its core application field covers the whole process of fine filtration and clarification of various tea and coffee extracts in the beverage industry, including but not limited to: the fine filtration of liquid tea beverages (bottled/canned green tea, black tea, oolong tea, herbal tea) extracts, removing tea leaf fine residues and colloidal flocs to achieve high clarity of finished beverages; the fine filtration of coffee beverages (bottled cold brew coffee, ready-to-drink espresso, coffee milk tea) extracts, intercepting coffee ground particles and coffee oil flocs to improve beverage transparency and mouthfeel; the fine filtration of tea/coffee concentrates (tea syrup, coffee concentrate, espresso extract) for catering and beverage processing, ensuring high clarity and preventing sedimentation during storage and dilution; the fine filtration of instant tea/coffee powder raw material extracts, removing micro insoluble impurities to ensure the solubility and clarity of instant powders after brewing; the fine filtration of specialty tea/coffee extracts (craft tea, single-origin coffee, cold brew coffee) for high-end beverage brands, achieving high clarity while fully retaining the unique flavor and aroma of raw materials; the fine filtration of tea/coffee extract for dairy-based beverages (milk tea, coffee latte, matcha milk), removing plant fine residues to avoid affecting the stability and taste of dairy-based products. In addition, with its 1μm high-precision filtration performance, food-grade safety and flavor retention characteristics, the cartridge can also be widely applied to the fine filtration of other plant-based beverage extracts (herbal tea, fruit and vegetable tea, cocoa extract) that require high clarity and flavor retention, complying with the strict quality and safety norms of the beverage industry.
Conclusion
In summary, this 1μm food-grade filter cartridge is a highly targeted, food-safe and high-performance precision filtration product developed for the strict fine filtration and flavor retention demands of tea and coffee extract processing, and a customized filtration solution for the modern beverage industry’s pursuit of high-quality tea/coffee products, authentic flavor preservation and continuous industrial production. It perfectly combines the advantages of fixed 1μm absolute filtration precision, 0% salt rejection rate for authentic flavor retention, optimized MWCO for targeted filtration, balanced flux & low pressure drop and universal filter housing compatibility, solving the industry pain points of traditional filtration components for tea/coffee extracts—such as inconsistent filtration precision, easy adsorption of flavor substances, high pressure drop, and failure to balance clarification and flavor retention. Its core fixed 1μm absolute filtration precision is the optimal choice for tea/coffee extract fine filtration, which can thoroughly remove all micro insoluble impurities causing turbidity and sedimentation, ensuring the high clarity and storage stability of tea/coffee extracts and finished products, and meeting the sensory quality requirements of consumers for clear tea/coffee beverages. The 0% salt rejection rate and precisely set 50,000-200,000 Da MWCO are the core guarantees for flavor retention: they ensure the complete retention of all soluble natural flavor, aroma and nutritional substances in tea/coffee extracts, strictly preserving the authentic taste and unique characteristics of different tea and coffee raw materials, which is the most critical quality requirement for the tea/coffee beverage industry. The optimized filter layer structure realizes a perfect balance between high-precision filtration, practical flux and low pressure drop, adapting to the physical characteristics of tea/coffee extracts (moderate viscosity, different concentrations) and the continuous production characteristics of beverage processing lines, effectively reducing the energy consumption of the fine filtration link and avoiding the loss of volatile flavor substances caused by excessive pressure. The 100% food-grade PP raw materials and hygienic structural design completely eliminate the risk of secondary pollution to tea/coffee extracts, complying with the strict food safety and hygiene control requirements of the beverage industry, and the reinforced structural stability and temperature resistance ensure long-term stable operation under the working conditions of tea/coffee extract processing (0-80℃, hydraulic impact). The universal compatibility with standard beverage filter housings supports parallel use for mass production, meeting the production needs of large-scale tea/coffee beverage manufacturers, while the strong adaptability to various tea/coffee extracts makes it suitable for both conventional and high-end tea/coffee product processing. With the advantages of easy installation and replacement, stable performance and cost-effectiveness, this cartridge effectively improves the production efficiency and product quality of tea/coffee extract processing lines, reduces the operation and maintenance cost of filtration equipment, and meets the production needs of beverage enterprises with different production scales and product positioning (conventional/budget/high-end). As an indispensable core 1μm fine filtration component for the tea/coffee beverage industry, this product adapts to the development trend of the beverage industry towards high quality, natural flavor, refinement and large-scale production, and its excellent 1μm high-precision filtration performance, core flavor retention characteristic, strict food safety compliance and perfect adaptability to tea/coffee extract processing systems make it have a wide and stable application prospect in the global beverage industry. With the continuous improvement of national food safety standards and consumer demand for high-quality, authentic-flavor tea/coffee beverages, the market demand for such high-quality specialized 1μm filter cartridges for tea and coffee extract fine filtration will continue to increase, and it will become the first choice for tea/coffee beverage manufacturers, instant drink production enterprises and specialty tea/coffee processing facilities in the fine filtration and clarification link of tea/coffee extract processing.
Related products
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