As a professional manufacturer providing full-range industrial water treatment solutions centered on Liquid Filters, we deliver standardized test reports and complete supporting documents for all types of filtration components used in commercial and municipal water purification. The TMG20-400, a classic 8040-size standard rejection RO membrane from Toray, comes with a full set of official RO membrane test report covering core technical indicators including salt rejection rate and permeate flow rate, offering reliable data support for engineering design, equipment debugging and factory acceptance inspection.
As a professional manufacturer providing full-range industrial water treatment solutions centered on Liquid Filters, we deliver standardized test reports and complete supporting documents for all types of filtration components used in commercial and municipal water purification. The TMG20-400, a classic 8040-size standard rejection RO membrane from Toray, comes with a full set of official RO membrane test report covering core technical indicators including salt rejection rate and permeate flow rate, offering reliable data support for engineering design, equipment debugging and factory acceptance inspection.
Classified as a general-purpose brackish water RO membrane in the product specification sheet, TMG20-400 features balanced overall performance and wide adaptability for municipal tap water and shallow underground groundwater treatment. Every finished membrane element will go through strict offline sampling testing before delivery, and the complete test records are compiled into a formal RO membrane test report. Unlike special low-pressure or high-rejection membranes with narrow applicable scenarios, this universal spiral wound RO membrane has unified test standards, stable batch consistency, and its salt rejection and flow rate data have small fluctuation ranges, which is favored by water treatment engineers and project purchasers. Adopting a standard 400 sq. ft membrane area design, this RO membrane element is compatible with all mainstream 8-inch pressure vessels on the market, and all test data can be used as the basis for equipment parameter matching and post-operation performance comparison.
The two core test items highlighted in the TMG20-400 RO membrane test report — salt rejection and flow rate — are determined by its optimized polyamide thin-film composite separation structure. As a mature balanced-performance reverse osmosis membrane, it realizes dual stable performance of consistent water yield and effective ion interception through uniform hydrophilic membrane surface and moderate-resistance internal flow spacers.
Under standard test pressure, pure water molecules quickly pass through the dense separation layer to form stable permeate flow, while calcium, magnesium, sodium and other dissolved salt ions are trapped on the raw water side and discharged with concentrated water. The uniform surface charge avoids severe concentration polarization, which effectively prevents the continuous decline of flow rate and salt rejection during long-term operation. Compared with ordinary low-cost industrial RO membrane, the streamlined 34mil feed channel reduces local pollutant accumulation, so the test data of new membranes and aged membranes after cleaning have smaller gaps, forming repeatable and credible data in the inspection report. Its basic hydrophilic modification also endows it with mild anti-fouling RO membrane characteristics, further ensuring the stability of salt rejection and flow rate test results under simulated long-cycle operation conditions.
All data listed below are authentic standard test values recorded in the official TMG20-400 RO membrane test report, focusing on salt rejection and flow rate performance data required by most engineering acceptance standards:
Test Standard Environment: 25°C, 150 psi operating pressure, 2000 ppm NaCl standard salt water
Nominal Active Membrane Area: 400 sq. ft
Stabilized Salt Rejection Test Index: 99.2% ~ 99.5%
Rated Permeate Flow Rate: 9,800 – 11,200 GPD under standard test conditions
Maximum Allowable Feed Water SDI for Test: ≤5
Single Element Pressure Drop in Test: ≤15 psig
Continuous Operating Temperature Range for Long-Term Test: 5°C – 45°C
Test pH Range for Stable Performance: 2.0 – 11.0
Test Conclusion: Uniform salt rejection and flow rate among batches, no obvious performance attenuation under continuous 72-hour cyclic test
Besides the two core indicators, the complete RO membrane test report also includes pressure resistance test, temperature adaptability test, acid-base cleaning recovery test and surface anti-fouling simulation test, providing all-round performance reference for system design and post-maintenance.
Multiple prominent strengths of TMG20-400 can be fully verified through the standardized data recorded in its official RO membrane test report. First of all, the salt rejection test data of all production batches maintains an extremely narrow fluctuation range, stably locked between 99.2% and 99.5%, with almost no large performance gap between different batches, which effectively eliminates hidden troubles of unstable outlet water quality caused by inconsistent membrane element quality in water treatment projects. Meanwhile, the standardized production process ensures highly repeatable permeate flow rate test results; in continuous cyclic simulation tests attached to the report, the water yield only slightly drops in the early fouling stage and can be fully restored after conventional acid and alkali cleaning, effectively solving the problem of insufficient water supply in long-running commercial water equipment. In addition, the complete test report covers all technical parameters required for engineering bidding and factory inspection, including salt rejection rate, flow rate, pressure loss and temperature tolerance, allowing customers to directly submit official test documents for project filing, third-party inspection and equipment acceptance without additional re-testing expenses. The accelerated fouling simulation test data further proves that the smooth hydrophilic membrane surface and standard flow channel greatly slow down the adhesion of organic matter and colloids, so the attenuation speed of salt rejection and flow rate is much lower than ordinary brackish water membranes, extending the maintenance cycle and the overall RO membrane lifespan. Benefiting from the universal 8040 size design, this mainstream RO membrane element shares unified testing and system matching standards with all 8-inch pressure vessels on the market, and after replacing old membrane elements on existing equipment, the salt rejection and flow rate indicators can rapidly reach the standard range recorded in the test report without complex adjustment of system operation parameters.
With complete and credible data recorded in the TMG20-400 RO membrane test report, this standard rejection membrane is widely applied in various commercial and municipal water treatment scenarios that require formal performance inspection documents. It serves as the core filter element for community water vending stations, where stable salt rejection and flow rate test data guarantee continuous and qualified drinking water supply for residents all year round. Hotels, campuses and office buildings equipped with centralized pure water supply systems rely on its standardized test indicators to maintain stable daily water output and consistent water quality, reducing frequent equipment parameter debugging work for management personnel. Small food, coffee and bakery production workshops adopt this membrane to produce purified process water, and the complete test report can be submitted for food hygiene inspection and factory audit. In suburban shallow groundwater purification and municipal tap water deep treatment projects, engineering designers refer to its salt rejection and flow rate test data to accurately calculate system pump power, membrane quantity and water production efficiency, optimizing the overall design scheme while meeting environmental protection and drinking water safety standards.
Every batch of TMG20-400 membrane elements undergoes full sampling testing before leaving the factory, and each finished product is attached with an independent serial-numbered RO membrane test report recording salt rejection, flow rate and other full performance data. The whole production process strictly follows the ISO 9001 quality management system, all raw materials in contact with water comply with FDA food contact safety standards, and the core test indicators have passed NSF drinking water safety certification. Complete test datasheets, material traceability records and factory inspection certificates are provided together with goods for engineering filing, third-party quality inspection and customer factory audit. Finished membranes are vacuum-sealed with special protective liquid to prevent dry film damage and surface pollution during transportation, ensuring that the salt rejection and flow rate performance data after installation are consistent with the original test values in the report.
As more water treatment engineering companies and equipment manufacturers pay attention to standardized test data and formal inspection documents, the market demand for RO elements with complete RO membrane test report will keep growing. Special high-performance membranes often have customized test standards with poor data universality, while TMG20-400, as a standard general-purpose brackish water membrane, has unified and widely recognized salt rejection and flow rate test indicators, occupying an important position in medium and small commercial water treatment projects. Our R&D team will continue to optimize the polyamide membrane formula to further narrow the fluctuation range of salt rejection and flow rate test data, and extend the effective service cycle of stable performance. Its balanced energy consumption and low maintenance cost also conform to the global low-carbon operation trend, and more new commercial water station construction and old equipment renovation projects will select this membrane with complete test documents.
The TMG20-400 RO Membrane with complete official RO membrane test report is a universal balanced-performance brackish water RO membrane focusing on standardized salt rejection and flow rate performance data. Through mature spiral wound structure and hydrophilic separation layer design, it achieves stable and repeatable test indicators under standard inspection conditions, solving the trouble of inconsistent performance and incomplete inspection documents of ordinary low-cost RO elements.
Compared with special high-rejection or ultra-low pressure membranes with high matching thresholds, this standard rejection reverse osmosis membrane provides clear, unified and credible test data at lower overall project cost, becoming the preferred product for most conventional tap water and underground brackish water treatment projects that require formal quality inspection reports. For water treatment engineers, equipment suppliers and station operators who need reliable salt rejection and flow rate test data for design, acceptance and daily operation reference, TMG20-400 delivers long-term stable purification value and complete standardized supporting test documents.
Q1: What core test data is included in the TMG20-400 RO membrane test report?
A1: The full official RO membrane test report takes salt rejection and permeate flow rate as core test items, and also covers pressure resistance, temperature adaptability, SDI tolerance, acid-base cleaning recovery and anti-fouling simulation test data, covering all key performance indicators of a standard industrial RO membrane.
Q2: Can TMG20-400 directly replace old 8040 membrane elements on existing water equipment?
A2: Yes. It adopts universal 8040 size compatible with all mainstream pressure vessels. After replacement, the system salt rejection and flow rate will quickly match the standard data recorded in the test report without modifying pumps and pipelines.
Q3: Will long-term continuous operation cause the salt rejection and flow rate to deviate greatly from the test report data?
A3: Under standard pretreatment (feed SDI＜5) and regular acid-base cleaning maintenance, the salt rejection and flow rate can remain consistent with the test report standard range for 3–5 years, and its average RO membrane lifespan is longer than thin-film low-cost elements with unstable test data.
Q4: What pretreatment equipment is required to keep the actual operation data consistent with the RO membrane test report?
A4: Multi-media filter, activated carbon filter and 5μm security filter must be equipped to control feed water SDI below 5 and avoid particle scratches on the membrane surface leading to permanent attenuation of salt rejection and flow rate test indicators.
Q5: Is TMG20-400 suitable for heavily polluted industrial wastewater reuse projects?
A5: It is designed for municipal tap water and low-pollution shallow groundwater. For high-pollution wastewater, professional anti-fouling RO membrane series such as TMF20-400 are recommended to maintain stable long-term operation data.
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