---
product_id: 220529365
title: "KNL NF20 NF Nano Filtration Membrane, TFC Dry 100 GPD, BARC Licensed, Flux Rate (35) LTR/hr, Pore Size 0.0015 μ, Input TDS < 250 ppm, for nf or ro or nanofiltration Water Purifier Filter"
brand: "knl"
price: "A$44"
currency: AUD
in_stock: true
reviews_count: 6
url: https://www.desertcart.com.au/products/220529365-knl-nf20-nf-nano-filtration-membrane-tfc-dry-100-gpd
store_origin: AU
region: Australia
---

# 100 GPD capacity 0.0015 μ pore size BARC & ISO certified KNL NF20 NF Nano Filtration Membrane, TFC Dry 100 GPD, BARC Licensed, Flux Rate (35) LTR/hr, Pore Size 0.0015 μ, Input TDS < 250 ppm, for nf or ro or nanofiltration Water Purifier Filter

**Brand:** knl
**Price:** A$44
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your hydration game with smart, mineral-rich purity!

## Quick Answers

- **What is this?** KNL NF20 NF Nano Filtration Membrane, TFC Dry 100 GPD, BARC Licensed, Flux Rate (35) LTR/hr, Pore Size 0.0015 μ, Input TDS < 250 ppm, for nf or ro or nanofiltration Water Purifier Filter by knl
- **How much does it cost?** A$44 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/220529365-knl-nf20-nf-nano-filtration-membrane-tfc-dry-100-gpd)

## Best For

- knl enthusiasts

## Why This Product

- Trusted knl brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Tailored for Soft Water:** Designed for input TDS <250 ppm, perfect for balanced mineral water
- • **Energy & Water Efficient:** High flux rate of 35 L/hr with minimal water wastage vs RO systems
- • **Optimal Mineral Retention:** Preserves ~85% essential minerals for naturally healthy water
- • **Precision Nano Filtration:** Ultra-fine 0.0015 micron pores block contaminants while maintaining taste
- • **Certified Quality Assurance:** BARC licensed & ISO 9001:2015 certified for trusted performance

## Overview

The KNL NF20 Nano Filtration Membrane is a BARC-licensed, ISO-certified TFC dry membrane designed for domestic water purifiers. With a 100 GPD capacity and ultra-fine 0.0015 micron pores, it reduces TDS by ~15% while retaining 85% of essential minerals, delivering naturally healthy, mineral-enriched water. Optimized for soft water with TDS below 250 ppm, it operates efficiently at 70-80 PSI with a flux rate of 35 liters per hour, ensuring minimal water wastage and balanced pH unlike typical RO membranes.

## Description

KNL NF20 NF Nano Filtration Membrane, TFC Dry 100 GPD, BARC Licensed, Flux Rate (35) LTR/hr, Pore Size 0.0015 μ, Input TDS < 250 ppm, for nf or ro or nanofiltration Water Purifier Filter

## Features

- Dry, TFC, KNL-NF20 NF (Nano Filtration) membrane 100 GPD, pore size 0.0015 micron, BARC licensed & ISO certified 9001:2015, suitable for soft water having TDS up to 250 ppm max. Compatible with 100 GPD pump, FR 450 CC along with good inline filters and working pressure should be around 70-80 PSI. In case of low pressure or high pressure, the result may vary and in case of high pressure the membrane will get damage early too.
- Rejection rate around 15%, with variation of + - 7%, flux rate around 35 ltrs/hr, must be used along with good quality inline filters. The membrane naturally maintains healthy minerals (TDS) in drinking water around 85% with variation of + - 7%. With more TDS water taste will be little hard compare to RO water or demineralized water. Please note 150 ppm to 300 ppm range is known as mineral water.
- The membrane must be used where the tap water TDS is less than 250 ppm else the result may not be satisfactory and the water taste will too much hard. Service life is around 20000 litres but subject to use with good quality of inline filters (especially sediment and pre-carbon filter). The membrane does not reduces much pH from raw water unlike RO membrane that makes the water too much acidic.
- As per WHO, BIS, EPA and other medical recommendations, the drinking water with minerals between 100 ppm to 300 ppm remain in excellent conditions with pH value pH 7.5 to pH 8. More than pH 8.5 not acceptable as per medical recommendations. The water taste varies as per TDS. If addicted with low mineral, the user may feel heaviness while drinking with more mineral drinking water.
- TDS adjuster or controller is nothing but a bypass system to flow the water through carbon filter and then mixed with membrane purifier water in a proportion to maintain TDS at desired level. But the bypass system allows impurities like arsenic, bromide, fluoride, cyanide and other impurities if exist in raw water. Therefore, always use suitable membrane as per your raw water hardness that will give you more safe, healthy and mineral enriched water than TDS adjuster technology.
- Contaminants molecule size remain greater than 0.01 microns, germs size from 0.027 microns to 5 microns, water molecule size is 0.000283 microns, dissolve compositions of mineral molecule size remain less than 0.0009 microns, but all NF Membrane pore sizes are 0.0015, 0.0010, 0.0005, 0.0002 microns & RO membrane pore size is 0.0001 microns, therefore the NF Membrane & Ro membrane does the job far better than the UV and TDS controller system.
- The working pressure should be 70-88 PSI, inlet pressure up to 1-2 PSI, in case of high rise or high inlet pressure, users are requested to use PRV else the membrane will get damage early.
- In case of high rise building or where the large concrete overhead tank is used, the tap water pressure may be more than 2 PSI, in that case users are requested to use PRV else the nf membrane may get malfunctioned early.
- Installation guidelines: Before inserting new membrane, make sure the membrane housing is clean else loose particles led to blockage of FR. The KNL-NF membrane need to flush up to 30 minutes and then check the result. Water taste with more TDS may some people feel hard compare to RO water or normal bottle packed water but medically healthy to intake mineral enriched drinking water. Always use new FR 450 with the membrane, partial blocked FR or if used in reverse order the membrane will get damage early/immediately.
- Warranty details - The membrane does not cover any warranty. The performance of the membrane and filters depends on user skill with proper installation, feed water quality, and pump with required working pressure (70-80) PSI. Once put to use cannot be taken back except in case of manufacturing defect.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Made from Food grade non toxic TFC Sheet (Made in India) |
| Product Dimensions | 30D x 6W x 6H Centimeters |
| Item Weight | 250 Grams |
| External Testing Certification | EPA |
| Product Benefits | Maintains essential mineral naturally, very less water wastage compare to RO, does not make water acidic like RO Membrane |
| Brand | KNL |
| Net Quantity | 1 count |
| Number of Items | 1 |
| Manufacturer | KNL Trading Co. (Outsourced) |
| Country of Origin | India |
| Model number | TDS (up to 250) ppm |
| Colour | Blue with black gastket and whit tape |
| Special Feature | Compatible FR 450 CC and 100 GPD pump along with good inline filters, Nanofiltration Technology, reduces TDS around 30% from feed water, Used for soft water having TDS up to 300 ppm. NF20 Membrane does not reduce pH much from tap water unlike RO membrane., Water wastage is very less compare to RO membrane |
| Item Weight | 250 g |
| Item model number | TDS (up to 250) ppm |
| Power Source | Corded Electric |
| Included Components | NF20 Membrane |
| Are batteries included? | No |

## Product Details

- **Material:** Made from Food grade non toxic TFC Sheet (Made in India)
- **Product Dimensions:** 30D x 6W x 6H Centimeters
- **Item Weight:** 250 Grams
- **External Testing Certification:** EPA
- **Product Benefits:** Maintains essential mineral naturally, very less water wastage compare to RO, does not make water acidic like RO Membrane

## Images

![KNL NF20 NF Nano Filtration Membrane, TFC Dry 100 GPD, BARC Licensed, Flux Rate (35) LTR/hr, Pore Size 0.0015 μ, Input TDS < 250 ppm, for nf or ro or nanofiltration Water Purifier Filter - Image 1](https://m.media-amazon.com/images/I/61Ox34pDXkL.jpg)
![KNL NF20 NF Nano Filtration Membrane, TFC Dry 100 GPD, BARC Licensed, Flux Rate (35) LTR/hr, Pore Size 0.0015 μ, Input TDS < 250 ppm, for nf or ro or nanofiltration Water Purifier Filter - Image 2](https://m.media-amazon.com/images/I/71w5IyugjCL.jpg)
![KNL NF20 NF Nano Filtration Membrane, TFC Dry 100 GPD, BARC Licensed, Flux Rate (35) LTR/hr, Pore Size 0.0015 μ, Input TDS < 250 ppm, for nf or ro or nanofiltration Water Purifier Filter - Image 3](https://m.media-amazon.com/images/I/619qcwJQI0L.jpg)
![KNL NF20 NF Nano Filtration Membrane, TFC Dry 100 GPD, BARC Licensed, Flux Rate (35) LTR/hr, Pore Size 0.0015 μ, Input TDS < 250 ppm, for nf or ro or nanofiltration Water Purifier Filter - Image 4](https://m.media-amazon.com/images/I/61ltnlaMD2L.jpg)
![KNL NF20 NF Nano Filtration Membrane, TFC Dry 100 GPD, BARC Licensed, Flux Rate (35) LTR/hr, Pore Size 0.0015 μ, Input TDS < 250 ppm, for nf or ro or nanofiltration Water Purifier Filter - Image 5](https://m.media-amazon.com/images/I/81kFOxPs4xL.jpg)

## Available Options

This product comes in different **Model** options.

## Questions & Answers

**Q: Can this be used in any water purifier brand?**
A: Whichever uses membrane element of same size and shape.

**Q: Do we need booster pump with this membrane ?**
A: Yes pump needed 100 gpd with 80 psi. Though it will work with 75 gpd pump too but for better result use 100 gpd and FR 300 or 350 cc.

**Q: Do i need to use UV after using this or can i skip it?**
A: No need, the germs and contaminants can not pass through the membrane

**Q: Does this improve the taste of water? my tds is around 200 but the water taste is too bad.**
A: Water taste mainly depends on two things. 1) TDS means water hardness and the 2) pH value..... 
TDS range from 150 ppm to 300 ppm known as mineral water and its really healthy but make sure the water is free from microbes, lead, arsenic,  bromide vocs etc

Water taste varies person to person. Whosoever addicted with low mineral and acidic water like ro water may exprience bad taste above 100 ppm tds but that does not mean water quality is bad but normally who are addicted with mineral water or normal tap water, they enjoy the water taste with tds between 150 ppm to 300 ppm.  

Same difference you can exprience with mineral bottle water like himalya and normal packed bottled water

## Customer Reviews

### ⭐⭐⭐⭐⭐ Must buy
*by J***F on 27 July 2021*

I replaced my R.O. membrane with this membrane after extensive research online. A local R.O. guy came and installed sediment filter, carbon filter, uv light n NF membrane. It's easy to install just like an ordinary R.O. membrane. Any professional working in field of water purifier technology can install it. My water TDS was as low as 45 coz of R.O. filter. My tank TDS is 450. Now after installing this d tds of drinkable water is 100-130.The water tasted sweet now as compared to earlier. It is a product which should be promoted irrespective of whatever tds your area has. As this nf comes with different models for different tds of water. Replace this nf with ur R.O. membrane as much soon as possible to drink good quality of water

### ⭐⭐⭐⭐ Good one but little bit costly
*by S***A on 1 November 2024*

After going through all the article related to RO and water condition, I decide to go with nano filter as it best serves the purpose. Nano filter is as effective as a RO as both remove all the micro-organisms/virus/chemical/lead/arsenic present in water while reducing the TDS. There is no difference is water quality except the TDS level when comparing RO with nano filter. While RO suppress the TDS to below 50, then you have to use mineral/alkaline cartridge to bring back the optimal TDS level but in case of nano filter it is in range of 150-400 PPM which save your money on using additional mineral cartridge. Also, TDS adjuster in RO is a big scam so never fall for that marketing gimmick, if you have TDS controller in your existing RO then stop using it, ask technician to close that valve.Go with RO only when your water is not consumable even only one time or even after using some gravity filter, if those conditions are not true then you do not need a RO. Also, water wastage in RO is much higher like for every one glass of water, you are draining 3 glasses of water.I am using NF-40 filter and my tap water TDS is around 450 PPM, after using this filter TDS drop to 225 PPM and water wastage is around little bit more than one glass for every one glass of water (50-55% wastage). Overall, I am happy with my purchase.

### ⭐⭐⭐⭐⭐ good for below 200 tds water
*by G***Y on 16 May 2025*

Work very good but price is high

## Frequently Bought Together

- KNL NF20 NF Nano Filtration Membrane, TFC Dry 100 GPD, BARC Licensed, Flux Rate (35) LTR/hr, Pore Size 0.0015 μ, Input TDS < 250 ppm, for nf or ro or nanofiltration Water Purifier Filter
- KNL RO/NF opeanable Membrane Housing/casing, Food Grade Plastic, Compatible with 75 GPD, 80 GPD and 100 GPD Membrane
- KNL RO/NF Sediment & Activated Block Carbon (Pre Carbon) Filter/Cartridge/Candle Set with pushfit Elbows Suitable for All RO or NF Water Purifier

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-23*