DOW FILMTEC™ reverse osmosis (RO) membranes for home drinking water treatment units are some of the most reliable and consistent elements in the industry. Advanced membrane technology and precision manufacturing allow Dow to precisely produce each and every element to tight, pre-defined specifications. Dow’s advanced and consistent RO element quality helps customers develop, and maintain brand recognition along with a reputation for building systems that can reliably provide low impurity drinking water. DOW FILMTEC elements are shipped dry for convenient handling and long shelf-life.
Product Type
Spiral-wound element with polyamide thin-film composite membrane
Dimension
11.74 in x 1.75 in
Product Specifications
| Applied Pressure |
Permeate Flow Rate |
Typical Stabilized Salt Rejection (%) |
||
| (psig) | (bar) | (GPD) | (L/h) | |
| 50 | 3.4 | 24 | 3.8 | 98.0 |
- Permeate flow and salt rejection based on the following test conditions: 250 ppm softened tap water, 77°F (25°C), 15% recovery and the specified applied pressure.
- Minimum salt rejection is 96.0%.
- Permeate flows for individual elements may vary ±20%.
Operating and Cleaning Limits
| Maximum Operating Temperature |
Maximum Operating Pressure |
Maximum Feed Flow Rate |
pH Range, Continuous Operation |
Maximum Feed Silt Density Index (SDI) |
Free Chlorine Tolerance |
| 113°F (45°C) | 150 psig (10 bar) | 2.0 gpm (7.6 lpm) | 2 - 11 | SDI 5 | < 0.1 ppm |
• Under certain conditions, the presence of free chlorine and other oxidizing agents will cause premature membrane failure. Since oxidation damage is not covered under warranty, Dow Water & Process Solutions recommends removing residual free chlorine by pretreatment prior to membrane exposure.