TFC Spiral Wound Design for superior membrane flux
Effective under extreme conditions with wide operating limits
Industry Standard Sized Membrane
FDA Title 21 Approved and NSF Standard 58 Certified
100% Made In USA
DOW FILMTEC™MEM-45 reverse osmosis membranes are the industry’s best and most reliable filters for home drinking water. These premium-grade membranes are selectively produced elements that have been specially tested and packed by the manufacturer to guarantee the highest contaminant rejection rates possible. Additionally, these membranes also offer the fastest response time, high flow rates and excellent removal capacity immediately after install with minimal settling in period. Available only through this website, APEC is proud to be able to offer these special MEM-45 membranes exclusively to our customers.
DOW FILMTEC’s advanced membrane technology and automated fabrication allow their elements to deliver consistent performance that equipment suppliers, water treatment dealers, and residential customers can rely on. These FILMTEC membranes are certified to NSF 58 standards, and they deliver excellent performance in terms of flux, salt and organics rejection, and microbiological resistance.
Polyamide Thin-Film Composite
Maximum Operating Temperature
Maximum Operating Pressure
150 psig (10 bar)
Maximum Feed Flow Rate
2.0 gpm (7.6 lpm)
pH Range, Continuous Operation
pH Range, Short-Term Cleaning
Maximum Feed Silt Density Index
Free Chlorine Tolerance
< 0.1 ppm
(Gallon per Day @ 60psi)
1.75W x 11.75L
Permeate flow rate and salt rejection based on the following test conditions: 250 ppm softened tap water at 50 psig, 77°F (25°C), and 15% recovery.
Permeate flows for individual elements may vary +/-20%.