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The TFC 1812-75 GPD membrane requires 65 psi for optimal performance and durability. It can also withstand pressures of up to 200 psi, but this may impair the membrane's performance, life span, and structural damage.
Tapwater and underground water perform best with the membrane. Although some of our clients use it for other water sources, keep in mind that the rejection rate may drop to 95 or 96; otherwise, a higher pressure vessel is required (100 psi).
Since 2008, we have been producing reverse osmosis membranes for home, commercial, and industrial use. With our OWN auto rolling line and OWN RO flat sheet assembling process, we have been able to supply branded and customized reverse osmosis membranes to retailers, distributors (B-2-B) and end users (B-2-C) across the world, as well as providing both ODM & OEM services.
The Salt rejection for this membrane is set at 97%. This is the standard rejection rate for an 1812 75-gallons membrane, though the membrane may perform better than indicated.
The 1812 model is the most commonly used membrane in most standard small RO systems or home water purification machines. Capable of producing 75 gallons/284 liters of clean fresh water per day with only 65 psi pressure. Because it is less expensive than other models in the 1812 series, it is ideal for home use, producing enough clean water at a low cost. To achieve the recommended percentage of RO water salts in your water, the membrane removes 97 percent of the salts solids in the water, leaving It with a pleasant taste and a low TDS level. The membrane performs best at 25°C, which is typically the temperature of most feed water.
- Quantities Per Box 25
- Carton weight 5.8 kg
- Quantities Per Box 50
- Carton weight 11.6 kg
|Model No.||A (inch/mm)||B (inch/mm)||C (inch/mm)||D (inch/mm)||E (inch/mm)|
|Perfor-mance||Stable Desalination %||97||97||97||97||97||97|
|Min. Desalination %||96||96||96||96||96||96|
|Mean Permeable Flow GPD (L/d)||50 (204)||75 (281)||100 (380)||125 (478)||150 (567.75)||200(760)|
|Active Film Area ft2(m2)||3.5 (0.32)||4.2 (0.38)||5.0 (0.46)||5.0 (0.50)||6.0 (0.8)||10.33 (0.96)|
|Test Conditions||Pressure||65psi (0.45Mpa)|
|Water PH||6.5 to 7.5|
|Recovery Rate %||15|
|Operating Conditions||Max. Operating Pressure||200psi (2.0Mpa)|
|Max. Feed Water Temp.||45℃|
|Max. Feed Water Silt Density Index (SDI)||5|
|Feed Water Chlorine Tolerance||< 0.1 mg/l|
|Feed Water PH Range, Continuous Operation||3 to 10|
|Feed Water PH Range, Short-Term Cleaning||2 to 11|
|Max. Pressure Drop of Single Membrane||10psi (0.07Mpa)|
NOTE: The produced water amount listed in the table is an average value, compared with the standard value, the difference of the minimum amount of water produced by a single membrane does not exceed ± 15%.
|Feed Water PH Range,
Feed Water SDI
Start-up Data of Model TFC-1812-75 GPD
(test temp. 25℃; pressure at 65psi; TDS at 500ppm)
(test temp. 25℃; TDS at 500ppm)
HID RO Membranes are widely used in ultra-pure water, process pure water, cooling tower water, boiler water supply, pure water, throughout the electronics industry, optoelectronic industry, machinery manufacturing, fine chemical industry, medical pharmaceutical, food, and beverage industry, surface coating, and many other industries.