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Nano Filtration (NF)
Nano Filtration (NF) is a pressure-driven membrane separation process that operates between Reverse Osmosis (RO) and Ultrafiltration (UF) in terms of selectivity. NF membranes are designed to separate substances primarily based on molecular size and charge, providing partial removal of dissolved salts and organic matter while allowing smaller molecules to pass through.
They deliver a balance between high efficiency and energy savings, making NF a versatile solution for producing cleaner water with moderate mineral retention.
Spiral Membrane - NF
Nanofiltration (NF) sanitary spiral membranes are designed for advanced separation and superior performance in demanding hygienic environments. With pore sizes ranging from 0.001–0.01 microns, NF membranes provide precise removal of divalent ions, organic compounds, and larger molecular contaminants, while allowing for the retention of essential monovalent ions, such as sodium and potassium, to maintain the integrity of the liquid. Optimized for CIP/SIP compatibility and extended service life, NF membranes deliver consistent, high-quality water in applications across the dairy, food & beverage, pharmaceutical, and chemical industries, where stringent hygiene and product purity are essential.
| MODAL | MATIRIAL | MWCO | SIZE | MgSO4 REJECTION | NaCl REJECTION |
|---|---|---|---|---|---|
| NF20 | PES | 500-600 Da | 8040/4040/4021 | 75-80 % | 10-20 % |
| NF40 | PES | 200-300 Da | 8040/4040/4021 | 97.5-98.5 % | 20-40 % |
| NF70 | PES | 150-250 Da | 8040/4040/4021 | 98-98.5 % | 40-70 % |
| NF90 | PES | 100-150 Da | 8040/4040/4021 | 98-98.5 % | 85-95 % |
Key Applications :
Dairy & Food Processing – whey demineralization, sugar & syrup purification, flavor/color reduction.
Beverage Industry – water softening, removal of organic micro-pollutants, consistent taste quality.
Pharmaceuticals & Biotech – process water preparation, solvent recovery, contaminant control.
Chemical Processing – color removal, partial demineralization, purification of process streams.
Drinking & Process Water Treatment – hardness reduction, removal of pesticides & organic compounds.
Domestic Membrane - NF
Nanofiltration (NF) membranes for domestic use are designed to provide high-quality water filtration with efficiency and convenience. With pore sizes in the range of 0.001–0.01 microns, NF membranes effectively reduce hardness, organic impurities, pesticides, and color while allowing essential minerals like calcium, magnesium, and potassium to remain in the water. This balance ensures water that is both safe and healthy to drink, without the “flat taste” often associated with complete demineralization.
Compact and energy-efficient, domestic NF membranes operate at lower pressures compared to reverse osmosis, making them ideal for household water purifiers and point-of-use systems. They deliver reliable performance, longer service life, and consistent water quality, helping families enjoy cleaner, softer, and better-tasting water for daily consumption and cooking.
| MODAL | MATIRIAL | MWCO | SIZE | MgSO4 REJECTION | NaCl REJECTION |
|---|---|---|---|---|---|
| NF20 | PES | 500-600 Da | 1812/2012/3012 | 75-80 % | 20-30 % |
| NF40 | PES | 200-300 Da | 1812/2012/3012 | 97.5-98.5 % | 35-45 % |
| NF60 | PES | 150-250 Da | 1812/2012/3012 | 98-98.5 % | 55-65 % |
| NF80 | PES | 100-150 Da | 1812/2012/3012 | 98.5-99 % | 75-85 % |
Key Applications :
Household Water Purifiers – cleaner, softer, and safer water for daily use.
Drinking Water Filtration – reduces hardness, pesticides, and organic impurities while keeping minerals.
Cooking & Food Preparation – improves taste and safety of water used in cooking.
Laundry & Cleaning – softer water protects clothes and improves cleaning efficiency.
Low-Pressure Filtration Systems – energy-efficient operation suitable for domestic taps and kitchen
Sanitary Membranes (NF)
Sanitary NF membranes are engineered for hygienic industries where selective separation, purity, and reliability are critical. With pore sizes around 0.001–0.01 microns, they effectively reduce hardness, color, and organic contaminants while allowing essential minerals to pass through. Designed for CIP/SIP compatibility, they ensure long service life and consistent water quality in dairy, food & beverage, and pharmaceutical applications.
| MODAL | MATIRIAL | MWCO | SIZE | MgSO4 REJECTION | NaCl REJECTION |
|---|---|---|---|---|---|
| NF20 | PES | 500-600 Da | 8040/4040/4021 | 75-80 % | 10-20 % |
| NF40 | PES | 200-300 Da | 8040/4040/4021 | 97.5-98.5 % | 20-40 % |
| NF70 | PES | 150-250 Da | 8040/4040/4021 | 98-98.5 % | 40-70 % |
| NF90 | PES | 100-150 Da | 8040/4040/4021 | 98-98.5 % | 85-95 % |
Key Applications :
- Dairy Industry – Partial demineralization of whey, milk concentration, and removal of undesirable salts.
- Pharmaceuticals – Purification of process water and removal of organic impurities while retaining essential ions.
- Biotech & Fermentation – Separation of biomolecules, reduction of contaminants, and consistent process water quality.
- Food & Beverage – Color reduction, flavor refinement, and concentration of natural extracts.
- Water Treatment in Hygiene-Critical Plants – Softening and micro-pollutant removal under strict sanitary standards.