Fujian Huamo Technology Co., Ltd. is one of the most reliable manufacturers and suppliers of ro membrane for high tds applications in China. If you're going to wholesale bulk ro membrane for high tds applications made in China, welcome to get catalog and price list from our factory. All custom made products are with high quality and competitive price. Also, OEM service is available.
Product Details
RO membrane for high TDS applications is built for households that deal with tougher water conditions, especially where TDS is around 2000–4000 ppm. This 1812-75G RO membrane is commonly used in residential RO systems and is designed to keep a stable performance even when the feed water is relatively heavy. Under 60 psi testing pressure, it delivers around 75 GPD flow with 45% recovery, which makes it a practical choice for everyday home drinking water systems that need reliable output without frequent fluctuation.
From production side, this home RO membrane for high TDS water is manufactured in our factories located in Quanzhou and Sanming, Fujian. It belongs to our BW high rejection series, which is focused on higher salinity applications compared to UL P and LP series. With a stable salt rejection rate of about 97%, the 1812-75G RO membrane performs well in improving water taste and reducing dissolved salts in real use conditions. We have expanded four production lines in recent years to keep up with strong demand, so both OEM and bulk supply are well supported with stable lead time and consistent quality.
Product Specifications – 1812-75G RO Membrane
|
Item |
Specification |
|
Model |
1812-75G |
|
Product Type |
Residential use RO membrane |
|
Membrane Series |
BW High Rejection Series |
|
Applied Feed Water TDS |
2000–4000 ppm |
|
Permeate Flow Rate |
75 GPD (Gallons Per Day) |
|
Salt Rejection Rate |
97% (Stable) |
|
Test Pressure |
60 psi |
|
Recovery Rate |
45% |
|
Test Temperature |
25°C (standard test condition) |
|
Test Solution |
Prepared according to GB/T 34914-2021 standard |
|
Feed Water Composition |
CaCl₂·2H₂O (251 mg/L), MgSO₄·7H₂O (210.5 mg/L), blended solution conductivity 1000 ± 100 μS/cm |
|
Recommended Application |
Household RO systems with high TDS feed water |
|
Series Position |
High rejection / BW series (for hard & high salinity water) |
Why This RO Membrane Is Suitable for High TDS Water
Product Features & Advantages
- Stable performance under high TDS conditions
- This membrane is designed for 2000–4000 ppm feed water, making it more suitable for challenging residential water sources.
- 75 GPD consistent flow rate
- The 1812-75G RO membrane delivers stable daily output, suitable for common household RO systems without affecting water pressure balance.
- High rejection BW series design
- As part of our BW series, this membrane focuses on higher salt rejection and better performance in harder water conditions compared to LP and ULP series.
- Reliable salt rejection performance
- With 97% stable rejection, our RO membrane for high TDS applications ensures improved water quality and more consistent drinking water experience.
- Factory direct supply with expanded capacity
- Manufactured in our Quanzhou and Sanming facilities in Fujian, we have added four production lines in recent years to meet growing global demand. This ensures stable supply, consistent quality, and OEM support.
Manufacturing capacity
Our company is headquartered in Fujian, China, with RO membrane production bases located in Quanzhou and Sanming. In recent years, due to increasing global demand for residential and industrial reverse osmosis membranes, we have expanded production capacity by adding four new production lines.
This allows us to maintain stable delivery time and consistent product quality for the 1812-75G RO membrane and other household membrane models. We support OEM customization, bulk supply, and long-term cooperation for distributors and system manufacturers.
FAQ
Q1. Can this 1812-75G RO membrane really work with 2000–4000 ppm feed water?
Yes. This model belongs to our BW high rejection series, which is specially designed for higher TDS applications than standard household RO membranes. In actual use, it performs more stably under high salinity conditions and maintains around 97% salt rejection under standard testing conditions. For areas with hard groundwater or higher conductivity municipal water, this membrane is more suitable than common low-pressure residential membranes.
Q2. Why does the membrane flow become lower after installation in some systems?
In most cases, the issue is related to insufficient feed pressure rather than the membrane itself. Although the membrane is tested at 60 psi, many household systems in real use operate below this pressure, especially in apartments or areas with unstable water supply. Low pressure directly affects permeate flow. We usually recommend checking the booster pump performance, pre-filter blockage, and inlet pressure before replacing the membrane.
Q3. What pretreatment is recommended before using this high rejection RO membrane?
For stable long-term operation, we recommend installing PP sediment filters and activated carbon filters before the membrane. If feed water hardness is very high, adding a softening stage can help reduce scaling risk and extend membrane life. Good pretreatment is especially important for high TDS water because scaling and fouling happen faster compared to normal residential water conditions.
Q4. How long does the 1812-75G RO membrane normally last?
Under proper operating conditions, the typical service life is around 12–24 months. Actual lifespan depends heavily on feed water quality, pressure stability, and filter replacement frequency. In high TDS areas, regular replacement of pre-filters is very important because clogged filters increase membrane load and shorten service life.
Q5. Do you support OEM branding and customized packaging for distributors?
Yes. We support OEM production for the 1812-75G RO membrane, including customized labels, packaging design, carton printing, and brand support. With our production facilities in Quanzhou and Sanming and expanded production lines, we are able to support both bulk orders and long-term distributor cooperation with relatively stable lead times.