1812 Nanofiltration (NF) Membrane
Nanofiltration (NF): The Nanofiltration membranes operate in the realm between Ultrafiltration, and Reverse Osmosis filtering water down to 1 nanometer (0.001 microns), hence the term "Nanofiltration". Nanofiltration has a removal rating of 20 to 98% for minerals such as magnesium and calcium (hardness/lime), while only having a removal rating of 20 to 80% for minerals such as sodium and chloride (salts). What this translates into is that the NF membrane will remove a large amount of hardness (kalk / lime), and reduce the total mineral content of source water, however, it will still retain some of the minerals and salts from the source water.
The 1812 Nanofiltration (NF) Membranes are designed to work with low-pressure situations with small residential NF systems (such as under-the-counter Nanos) or with small purification systems used for applications such as household drinking water, restaurants, or in applications where the Total Mineral content is looking to be reduced, but not completely removed as would be the case with a Reverse Osmosis Membrane.
1812 NF Membrane Specifications:
- Average Permeated Flow (Product Water): 100GPD / 380LPD*
- Average Salt Rejection Rate: 50%
- Average Hardness (Lime / Kalk) Rejection Rate: 97%
- Membrane Type Polyamide: Thin-Film Composite
Testing Conditions for Specification rating:
Testing Pressure: 150psi (10 bar)
Testing Solution Temperature: 25°C
Testing Solution Concentration (Magnesium Sulfate) - 2000mg/l
PH Value of Testing Solution: 6.5 - 8.5
Recovery Rate of Single Element: 15%
Recommend Operating Conditions:
Maximum Operating Temperature: 113°F (45°C)
Maximum Operating Pressure: 300 PSI (21 bar)
Maximum Feed Flow Rate: 2.0 GPM (7.6 lpm)
pH Range, Continuous Operation: 4 – 11
Maximum Feed Silt Density Index (SDI): 4
Maximum Feed Water Turbidity (NTU): 1 NTU
Free Chlorine Tolerance: < 0.1 ppm
